WIP

* feat(gradle): add request metrics for build cache handler

* Implement fallback handling for Gradle plugin requests and update tests

* refactor(gradle): simplify response handling and remove unused metrics assertions

* Add tests for Gradle plugin metadata fallback and refactor metadata handling

---------

Co-authored-by: Mateusz (Mati) Kepa <m.kepa@sportradar.com>

.github/workflows/publish.yml

@@ -25,7 +25,7 @@ jobs:
           persist-credentials: false
 
       - name: Log in to the Container registry
-        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2
+        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -38,7 +38,7 @@ jobs:
           images: ghcr.io/${{ github.repository }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294
+        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f
         with:
           context: .
           push: true

.github/workflows/release.yml

@@ -7,6 +7,7 @@ on:
 
 permissions:
   contents: write
+  id-token: write
 
 jobs:
   release:
@@ -18,13 +19,15 @@ jobs:
           fetch-depth: 0
           persist-credentials: false
 
+      - uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
+
       - name: Set up Go
         uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
         with:
           go-version-file: go.mod
           cache: false
 
-      - uses: goreleaser/goreleaser-action@ec59f474b9834571250b370d4735c50f8e2d1e29 # v7.0.0
+      - uses: goreleaser/goreleaser-action@1a80836c5c9d9e5755a25cb59ec6f45a3b5f41a8 # v7.2.1
         with:
           version: "~> v2"
           args: release --clean

.github/workflows/zizmor.yml

@@ -26,4 +26,4 @@ jobs:
           persist-credentials: false
 
       - name: Run zizmor
-        uses: zizmorcore/zizmor-action@71321a20a9ded102f6e9ce5718a2fcec2c4f70d8 # v0.5.2
+        uses: zizmorcore/zizmor-action@a16621b09c6db4281f81a93cb393b05dcd7b7165 # v0.5.5

.golangci.yml

@@ -0,0 +1,28 @@
+version: "2"
+
+linters:
+  enable:
+    - gocritic
+    - gocognit
+    - gocyclo
+    - maintidx
+    - dupl
+    - mnd
+    - unparam
+    - ireturn
+    - goconst
+    - errcheck
+  settings:
+    goconst:
+      min-len: 4
+      min-occurrences: 5
+      ignore-tests: true
+      ignore-string-values:
+        - "^[a-z]+$"
+  exclusions:
+    rules:
+      - path: _test\.go
+        linters:
+          - goconst
+          - dupl
+          - mnd

.goreleaser.yaml

@@ -34,6 +34,17 @@ archives:
 checksum:
   name_template: "checksums.txt"
 
+signs:
+  - cmd: cosign
+    signature: "${artifact}.cosign.bundle"
+    args:
+      - sign-blob
+      - "--bundle=${signature}"
+      - "${artifact}"
+      - "--yes"
+    artifacts: checksum
+    output: true
+
 snapshot:
   version_template: "{{ incpatch .Version }}-next"
 

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.25-alpine AS builder
+FROM golang:1.26.3-alpine AS builder
 
 WORKDIR /src
 
@@ -15,7 +15,7 @@ COPY . .
 # Build the binary
 RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /proxy ./cmd/proxy
 
-FROM alpine:3.21
+FROM alpine:3.23.4
 
 RUN apk add --no-cache ca-certificates
 

LICENSE

@@ -0,0 +1,232 @@
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
+
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+
+16. Limitation of Liability.
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
+
+     <one line to give the program's name and a brief idea of what it does.>
+     Copyright (C) <year>  <name of author>
+
+     This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+     This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+     You should have received a copy of the GNU General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
+
+     <program>  Copyright (C) <year>  <name of author>
+     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+     This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
+
+You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>.

README.md

@@ -18,9 +18,7 @@ cooldown:
 
 A 3-day cooldown means that when `lodash` publishes version `4.18.0`, your builds keep using `4.17.21` until 3 days have passed. If the new release turns out to be compromised, you were never exposed.
 
-Resolution order: package override, then ecosystem override, then global default. This lets you set a conservative default and carve out exceptions for packages where you need faster updates.
+Resolution order: package override, then ecosystem override, then global default. This lets you set a conservative default and carve out exceptions for packages where you need faster updates. See [docs/configuration.md](docs/configuration.md) for the full config reference.
-
-Currently works with npm, PyPI, pub.dev, Composer, and Cargo, which all include publish timestamps in their metadata. See [docs/configuration.md](docs/configuration.md) for the full config reference.
 
 ## Supported Registries
 
@@ -28,17 +26,19 @@ Currently works with npm, PyPI, pub.dev, Composer, and Cargo, which all include
 |----------|-------------------|:--------:|:---------:|
 | npm | JavaScript | Yes | ✓ |
 | Cargo | Rust | Yes | ✓ |
-| RubyGems | Ruby | | ✓ |
+| RubyGems | Ruby | Yes | ✓ |
 | Go proxy | Go | | ✓ |
-| Hex | Elixir | | ✓ |
+| Hex | Elixir | Yes* | ✓ |
 | pub.dev | Dart | Yes | ✓ |
 | PyPI | Python | Yes | ✓ |
 | Maven | Java | | ✓ |
-| NuGet | .NET | | ✓ |
+| Gradle Build Cache | Java/Kotlin | | ✓ |
+| NuGet | .NET | Yes | ✓ |
 | Composer | PHP | Yes | ✓ |
 | Conan | C/C++ | | ✓ |
-| Conda | Python/R | | ✓ |
+| Conda | Python/R | Yes | ✓ |
 | CRAN | R | | ✓ |
+| Julia | Julia | | ✓ |
 | Container | Docker/OCI | | ✓ |
 | Debian | Debian/Ubuntu | | ✓ |
 | RPM | RHEL/Fedora | | ✓ |
@@ -52,6 +52,16 @@ Currently works with npm, PyPI, pub.dev, Composer, and Cargo, which all include
 
 Cooldown requires publish timestamps in metadata. Registries without a "Yes" in the cooldown column either don't expose timestamps or haven't been wired up yet.
 
+\* Hex cooldown requires disabling registry signature verification (`HEX_NO_VERIFY_REPO_ORIGIN=1`) since the proxy re-encodes the protobuf payload.
+
+## Install
+
+```bash
+brew install git-pkgs/git-pkgs/proxy
+```
+
+Or download a binary from the [releases page](https://github.com/git-pkgs/proxy/releases).
+
 ## Quick Start
 
 ```bash
@@ -200,6 +210,34 @@ Add to your `~/.m2/settings.xml`:
 </settings>
 ```
 
+The `/maven/` endpoint uses Maven Central as primary upstream and falls back to the Gradle Plugin Portal for Gradle plugin marker metadata and related artifacts when the primary upstream returns not found.
+
+For Gradle plugin resolution via the same proxy endpoint:
+
+```kotlin
+pluginManagement {
+  repositories {
+    maven(url = "http://localhost:8080/maven/")
+  }
+}
+```
+
+### Gradle HTTP Build Cache
+
+Configure in `settings.gradle(.kts)`:
+
+```kotlin
+buildCache {
+  local {
+    enabled = false
+  }
+  remote<HttpBuildCache> {
+    url = uri("http://localhost:8080/gradle/")
+    push = true
+  }
+}
+```
+
 ### NuGet
 
 Configure in `nuget.config`:
@@ -287,6 +325,21 @@ local({
 })
 ```
 
+### Julia
+
+Set the Pkg server before starting Julia:
+
+```bash
+export JULIA_PKG_SERVER=http://localhost:8080/julia
+```
+
+Or inside a running session:
+
+```julia
+ENV["JULIA_PKG_SERVER"] = "http://localhost:8080/julia"
+using Pkg; Pkg.update()
+```
+
 ### Docker / Container Registry
 
 Configure Docker to use the proxy as a registry mirror in `/etc/docker/daemon.json`:
@@ -345,6 +398,7 @@ sudo dnf update
 ## Configuration
 
 The proxy can be configured via:
+
 1. Command line flags (highest priority)
 2. Environment variables
 3. Configuration file (YAML or JSON)
@@ -460,6 +514,44 @@ proxy serve [flags]
 proxy [flags]  # same as 'proxy serve'
 ```
 
+### mirror
+
+Pre-populate the cache from PURLs, SBOM files, or entire registries. Useful for ensuring offline availability or warming the cache before deployments.
+
+```bash
+# Mirror specific package versions
+proxy mirror pkg:npm/lodash@4.17.21 pkg:cargo/serde@1.0.0
+
+# Mirror all versions of a package
+proxy mirror pkg:npm/lodash
+
+# Mirror from a CycloneDX or SPDX SBOM
+proxy mirror --sbom sbom.cdx.json
+
+# Preview what would be mirrored
+proxy mirror --dry-run pkg:npm/lodash
+
+# Control parallelism
+proxy mirror --concurrency 8 pkg:npm/lodash@4.17.21
+```
+
+The mirror command accepts the same storage and database flags as `serve`. Already-cached artifacts are skipped.
+
+A mirror API is also available when the server is running:
+
+```bash
+# Start a mirror job
+curl -X POST http://localhost:8080/api/mirror \
+  -H "Content-Type: application/json" \
+  -d '{"purls": ["pkg:npm/lodash@4.17.21"]}'
+
+# Check job status
+curl http://localhost:8080/api/mirror/mirror-1
+
+# Cancel a running job
+curl -X DELETE http://localhost:8080/api/mirror/mirror-1
+```
+
 ### stats
 
 Show cache statistics without running the server.
@@ -514,7 +606,7 @@ Recently cached:
 | Endpoint | Description |
 |----------|-------------|
 | `GET /` | Dashboard (web UI) |
-| `GET /health` | Health check (returns "ok" if healthy) |
+| `GET /health` | Health check (JSON; HTTP 200 healthy, 503 unhealthy) |
 | `GET /stats` | Cache statistics (JSON) |
 | `GET /metrics` | Prometheus metrics |
 | `GET /npm/*` | npm registry protocol |
@@ -530,10 +622,19 @@ Recently cached:
 | `GET /conan/*` | Conan C/C++ protocol |
 | `GET /conda/*` | Conda/Anaconda protocol |
 | `GET /cran/*` | CRAN (R) protocol |
+| `GET /julia/*` | Julia Pkg server protocol |
 | `GET /v2/*` | OCI/Docker registry protocol |
 | `GET /debian/*` | Debian/APT repository protocol |
 | `GET /rpm/*` | RPM/Yum repository protocol |
 
+### Mirror API
+
+| Endpoint | Description |
+|----------|-------------|
+| `POST /api/mirror` | Start a mirror job (JSON body with `purls`) |
+| `GET /api/mirror/{id}` | Get job status and progress |
+| `DELETE /api/mirror/{id}` | Cancel a running job |
+
 ### Enrichment API
 
 The proxy provides REST endpoints for package metadata enrichment, vulnerability scanning, and outdated detection.
@@ -744,9 +845,28 @@ The proxy exposes Prometheus metrics at `GET /metrics`. All metric names are pre
 | `proxy_storage_operation_duration_seconds` | histogram | `operation` | Storage read/write latency |
 | `proxy_storage_errors_total` | counter | `operation` | Storage read/write failures |
 | `proxy_active_requests` | gauge | | In-flight requests |
+| `proxy_health_probe_failures_total` | counter | `step` | Storage health probe failures by failing step (`write`, `size`, `read`, `verify`, `delete`). |
 
 Cache size and artifact count are refreshed every 60 seconds. The remaining metrics update on each request.
 
+### Health Check
+
+`/health` returns a structured JSON report of subsystem health. HTTP 200 if all checks pass; 503 if any fail.
+
+```json
+{
+  "status": "ok",
+  "checks": {
+    "database": {"status": "ok"},
+    "storage":  {"status": "ok"}
+  }
+}
+```
+
+Failing checks include an `"error"` field. Storage failures also include a `"step"` field identifying which probe step failed (`write`, `size`, `read`, `verify`, `delete`). When the database check fails, the storage entry reports `{"status": "skipped"}` so the response always carries the same key set.
+
+Storage probe results are cached for `health.storage_probe_interval` (default 30s) to bound the cost of probing remote backends. A probe holds an internal mutex for up to 10 seconds (the hardcoded per-probe timeout), so `/health` is intended as a Kubernetes **readiness** probe rather than a liveness probe — a slow S3 round-trip should pull the pod from rotation, not restart it.
+
 Scrape config for Prometheus:
 
 ```yaml
@@ -870,6 +990,7 @@ The proxy will recreate the database on next start.
 ## Building from Source
 
 Requirements:
+
 - Go 1.25 or later
 
 ```bash

cmd/proxy/main.go

@@ -16,6 +16,7 @@
 //
 //	serve    Start the proxy server (default if no command given)
 //	stats    Show cache statistics
+//	mirror   Pre-populate cache from PURLs, SBOMs, or registries
 //
 // Serve Flags:
 //
@@ -71,6 +72,14 @@
 //	PROXY_DATABASE_URL     - PostgreSQL connection URL
 //	PROXY_LOG_LEVEL        - Log level
 //	PROXY_LOG_FORMAT       - Log format
+//	PROXY_UPSTREAM_MAVEN   - Maven repository upstream URL
+//	PROXY_UPSTREAM_GRADLE_PLUGIN_PORTAL - Gradle Plugin Portal upstream URL
+//	PROXY_GRADLE_BUILD_CACHE_READ_ONLY       - Disable Gradle PUT uploads
+//	PROXY_GRADLE_BUILD_CACHE_MAX_UPLOAD_SIZE - Max Gradle PUT request body size
+//	PROXY_GRADLE_BUILD_CACHE_MAX_AGE         - Gradle cache max age eviction
+//	PROXY_GRADLE_BUILD_CACHE_MAX_SIZE        - Gradle cache max total size
+//	PROXY_GRADLE_BUILD_CACHE_SWEEP_INTERVAL  - Gradle cache eviction sweep interval
+//	PROXY_HEALTH_STORAGE_PROBE_INTERVAL      - Storage health probe cache interval (default "30s")
 //
 // Example:
 //
@@ -100,7 +109,11 @@ import (
 
 	"github.com/git-pkgs/proxy/internal/config"
 	"github.com/git-pkgs/proxy/internal/database"
+	"github.com/git-pkgs/proxy/internal/handler"
+	"github.com/git-pkgs/proxy/internal/mirror"
 	"github.com/git-pkgs/proxy/internal/server"
+	"github.com/git-pkgs/proxy/internal/storage"
+	"github.com/git-pkgs/registries/fetch"
 )
 
 const defaultTopN = 10
@@ -124,6 +137,10 @@ func main() {
 			os.Args = append(os.Args[:1], os.Args[2:]...)
 			runStats()
 			return
+		case "mirror":
+			os.Args = append(os.Args[:1], os.Args[2:]...)
+			runMirror()
+			return
 		case "-version", "--version":
 			fmt.Printf("proxy %s (%s)\n", Version, Commit)
 			os.Exit(0)
@@ -145,6 +162,7 @@ Usage: proxy [command] [flags]
 Commands:
   serve    Start the proxy server (default)
   stats    Show cache statistics
+  mirror   Pre-populate cache from PURLs, SBOMs, or registries
 
 Run 'proxy <command> -help' for more information on a command.
 
@@ -183,6 +201,14 @@ func runServe() {
 		fmt.Fprintf(os.Stderr, "  PROXY_DATABASE_URL     PostgreSQL connection URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_LOG_LEVEL        Log level\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_LOG_FORMAT       Log format\n")
+		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_MAVEN   Maven repository upstream URL\n")
+		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_GRADLE_PLUGIN_PORTAL Gradle Plugin Portal upstream URL\n")
+		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_READ_ONLY       Disable Gradle PUT uploads\n")
+		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_MAX_UPLOAD_SIZE Max Gradle PUT request body size\n")
+		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_MAX_AGE         Gradle cache max age eviction\n")
+		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_MAX_SIZE        Gradle cache max total size\n")
+		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_SWEEP_INTERVAL  Gradle cache eviction sweep interval\n")
+		fmt.Fprintf(os.Stderr, "  PROXY_HEALTH_STORAGE_PROBE_INTERVAL      Storage health probe cache interval\n")
 	}
 
 	_ = fs.Parse(os.Args[1:])
@@ -340,6 +366,151 @@ func runStats() {
 	}
 }
 
+func runMirror() {
+	fs := flag.NewFlagSet("mirror", flag.ExitOnError)
+	configPath := fs.String("config", "", "Path to configuration file")
+	storageURL := fs.String("storage-url", "", "Storage URL (file:// or s3://)")
+	databaseDriver := fs.String("database-driver", "", "Database driver: sqlite or postgres")
+	databasePath := fs.String("database-path", "", "Path to SQLite database file")
+	databaseURL := fs.String("database-url", "", "PostgreSQL connection URL")
+	sbomPath := fs.String("sbom", "", "Path to CycloneDX or SPDX SBOM file")
+	concurrency := fs.Int("concurrency", 4, "Number of parallel downloads") //nolint:mnd // default concurrency
+	dryRun := fs.Bool("dry-run", false, "Show what would be mirrored without downloading")
+
+	fs.Usage = func() {
+		fmt.Fprintf(os.Stderr, "git-pkgs proxy - Pre-populate cache\n\n")
+		fmt.Fprintf(os.Stderr, "Usage: proxy mirror [flags] [purl...]\n\n")
+		fmt.Fprintf(os.Stderr, "Examples:\n")
+		fmt.Fprintf(os.Stderr, "  proxy mirror pkg:npm/lodash@4.17.21\n")
+		fmt.Fprintf(os.Stderr, "  proxy mirror --sbom sbom.cdx.json\n")
+		fmt.Fprintf(os.Stderr, "  proxy mirror pkg:npm/lodash  # all versions\n\n")
+		fmt.Fprintf(os.Stderr, "Flags:\n")
+		fs.PrintDefaults()
+	}
+
+	_ = fs.Parse(os.Args[1:])
+	purls := fs.Args()
+
+	// Determine source
+	var source mirror.Source
+	switch {
+	case *sbomPath != "":
+		source = &mirror.SBOMSource{Path: *sbomPath}
+	case len(purls) > 0:
+		source = &mirror.PURLSource{PURLs: purls}
+	default:
+		fmt.Fprintf(os.Stderr, "error: provide PURLs or --sbom\n")
+		fs.Usage()
+		os.Exit(1)
+	}
+
+	// Load config
+	cfg, err := loadConfig(*configPath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error loading config: %v\n", err)
+		os.Exit(1)
+	}
+	cfg.LoadFromEnv()
+
+	if *storageURL != "" {
+		cfg.Storage.URL = *storageURL
+	}
+	if *databaseDriver != "" {
+		cfg.Database.Driver = *databaseDriver
+	}
+	if *databasePath != "" {
+		cfg.Database.Path = *databasePath
+	}
+	if *databaseURL != "" {
+		cfg.Database.URL = *databaseURL
+	}
+
+	if err := cfg.Validate(); err != nil {
+		fmt.Fprintf(os.Stderr, "invalid configuration: %v\n", err)
+		os.Exit(1)
+	}
+
+	logger := setupLogger("info", "text")
+
+	// Open database
+	var db *database.DB
+	switch cfg.Database.Driver {
+	case "postgres":
+		db, err = database.OpenPostgresOrCreate(cfg.Database.URL)
+	default:
+		db, err = database.OpenOrCreate(cfg.Database.Path)
+	}
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error opening database: %v\n", err)
+		os.Exit(1)
+	}
+	defer func() { _ = db.Close() }()
+
+	if err := db.MigrateSchema(); err != nil {
+		_ = db.Close()
+		fmt.Fprintf(os.Stderr, "error migrating schema: %v\n", err)
+		os.Exit(1) //nolint:gocritic // db closed above
+	}
+
+	// Open storage
+	sURL := cfg.Storage.URL
+	if sURL == "" {
+		sURL = "file://" + cfg.Storage.Path //nolint:staticcheck // backwards compat
+	}
+	store, err := storage.OpenBucket(context.Background(), sURL)
+	if err != nil {
+		_ = db.Close()
+		fmt.Fprintf(os.Stderr, "error opening storage: %v\n", err)
+		os.Exit(1) //nolint:gocritic // db closed above
+	}
+
+	// Build proxy (reuses same pipeline as serve)
+	fetcher := fetch.NewFetcher()
+	resolver := fetch.NewResolver()
+	proxy := handler.NewProxy(db, store, fetcher, resolver, logger)
+	proxy.CacheMetadata = true // mirror always caches metadata
+	proxy.MetadataTTL = cfg.ParseMetadataTTL()
+
+	m := mirror.New(proxy, db, store, logger, *concurrency)
+
+	ctx, cancel := context.WithCancel(context.Background())
+	go func() {
+		sigCh := make(chan os.Signal, 1)
+		signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
+		<-sigCh
+		cancel()
+	}()
+
+	if *dryRun {
+		items, err := m.RunDryRun(ctx, source)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "error: %v\n", err)
+			os.Exit(1)
+		}
+		fmt.Printf("Would mirror %d package versions:\n", len(items))
+		for _, item := range items {
+			fmt.Printf("  %s\n", item)
+		}
+		return
+	}
+
+	progress, err := m.Run(ctx, source)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+
+	fmt.Printf("Mirror complete: %d downloaded, %d skipped (cached), %d failed, %s total\n",
+		progress.Completed, progress.Skipped, progress.Failed, formatSize(progress.Bytes))
+
+	if len(progress.Errors) > 0 {
+		fmt.Fprintf(os.Stderr, "\nErrors:\n")
+		for _, e := range progress.Errors {
+			fmt.Fprintf(os.Stderr, "  %s/%s@%s: %s\n", e.Ecosystem, e.Name, e.Version, e.Error)
+		}
+	}
+}
+
 func printStats(db *database.DB, popular, recent int, asJSON bool) error {
 	defer func() { _ = db.Close() }()
 

config.example.yaml

@@ -29,6 +29,23 @@ storage:
   # Empty or "0" means unlimited
   max_size: ""
 
+  # Redirect cached artifact downloads to presigned storage URLs (HTTP 302)
+  # instead of streaming through the proxy. Only effective for S3 and Azure.
+  # Leave disabled if clients reach the proxy through an authenticating gateway,
+  # since presigned URLs bypass it.
+  direct_serve: false
+
+  # How long presigned URLs remain valid (e.g. "5m", "1h"). Default: "15m".
+  direct_serve_ttl: "15m"
+
+  # Public base URL to substitute into presigned URLs. Set this when the
+  # proxy reaches storage at an internal address (127.0.0.1, a Docker
+  # service name) but clients must use a public hostname. Only scheme and
+  # host are used; the signed path and query are preserved. For S3/MinIO
+  # the reverse proxy at this address must forward requests with the
+  # internal Host header or the SigV4 signature will not validate.
+  # direct_serve_base_url: "https://minio.example.com"
+
 # Database configuration
 database:
   # Database driver: "sqlite" (default) or "postgres"
@@ -49,11 +66,156 @@ log:
   # Log format: "text" or "json"
   format: "text"
 
+# Ecosystem support - routes and upstream repositories
+#
+# This section is optional, since 'include_default' in each section
+# defaults to 'true' and the route map will be populated with all of
+# the default routes if no configuration is provided.
+ecosystem:
+  cargo:
+    include_default: true
+    # the default route for crates.io
+    # route:
+    #   - path: /cargo
+    #     upstream:
+    #       - name: crates.io
+    #         index: https://index.crates.io
+    #         crates: https://static.crates.io/crates
+  composer:
+    include_default: true
+    # the default route for packagist.org
+    # route:
+    #   - path: /composer
+    #     upstream:
+    #       - name: packagist.org
+    #         upstream: https://packagist.org
+    #         repository: https://repo.packagist.org
+  conan:
+    include_default: true
+    # the default route for conan.io
+    # route:
+    #   - path: /conan
+    #     upstream:
+    #       - name: conan.io
+    #         upstream: https://center.conan.io
+  conda:
+    include_default: true
+    # the default route for anaconda.org
+    # route:
+    #   - path: /conda
+    #     upstream:
+    #       - name: anaconda.org
+    #         upstream: https://conda.anaconda.org
+  cran:
+    include_default: true
+    # the default route for r-project.org
+    # route:
+    #   - path: /cran
+    #     upstream:
+    #       - name: r-project.org
+    #         upstream: https://cloud.r-project.org
+  debian:
+    include_default: true
+    # the default route for debian.org
+    # route:
+    #   - path: /debian
+    #     upstream:
+    #       - name: debian.org
+    #         upstream: http://deb.debian.org/debian
+  gem:
+    include_default: true
+    # the default route for rubygems.org
+    # route:
+    #   - path: /gem
+    #     upstream:
+    #       - name: rubygems.org
+    #         upstream: https://rubygems.org
+  go:
+    include_default: true
+    # the default route for golang.org
+    # route:
+    #   - path: /go
+    #     upstream:
+    #       - name: golang.org
+    #         upstream: https://proxy.golang.org
+  hex:
+    include_default: true
+    # the default route for hex.pm
+    # route:
+    #   - path: /hex
+    #     upstream:
+    #       - name: hex.pm
+    #         upstream: https://repo.hex.pm
+  maven:
+    include_default: true
+    # the default route for maven.org
+    # route:
+    #   - path: /maven
+    #     upstream:
+    #       - name: maven.org
+    #         upstream: https://repo1.maven.org/maven2
+  npm:
+    include_default: true
+    # the default route for npmjs.org
+    # route:
+    #   - path: /npm
+    #     upstream:
+    #       - name: npmjs.org
+    #         upstream: https://registry.npmjs.org
+  nuget:
+    include_default: true
+    # the default route for nuget.org
+    # route:
+    #   - path: /nuget
+    #     upstream:
+    #       - name: nuget.org
+    #         upstream: https://api.nuget.org
+  oci:
+    include_default: true
+    # the default route for docker.io
+    # route:
+    #   - path: /v2
+    #     upstream:
+    #       - name: docker.io
+    #         registry: https://registry-1.docker.io
+    #         auth: https://auth.docker.io
+  pub:
+    include_default: true
+    # the default route for pub.dev
+    # route:
+    #   - path: /pub
+    #     upstream:
+    #       - name: pub.dev
+    #         upstream: https://pub.dev
+  pypi:
+    include_default: true
+    # the default route for pypi.org
+    # route:
+    #   - path: /pypi
+    #     upstream:
+    #       - name: pypi.org
+    #         index: https://pypi.org
+    #         files_host: files.pythonhosted.org
+  rpm:
+    include_default: true
+    # the default route for fedoraproject.org
+    # route:
+    #   - path: /rpm
+    #     upstream:
+    #       - name: fedoraproject.org
+    #         upstream: https://dl.fedoraproject.org/pub/fedora/linux
+
 # Upstream registry URLs and authentication
 upstream:
   # npm registry URL
   npm: "https://registry.npmjs.org"
 
+  # Maven repository URL (used by /maven endpoint)
+  maven: "https://repo1.maven.org/maven2"
+
+  # Gradle Plugin Portal Maven URL (fallback for plugin marker artifacts)
+  gradle_plugin_portal: "https://plugins.gradle.org/m2"
+
   # Cargo sparse index URL
   cargo: "https://index.crates.io"
 
@@ -91,6 +253,35 @@ upstream:
     #   header_name: "X-Auth-Token"
     #   header_value: "${MAVEN_TOKEN}"
 
+# Gradle HttpBuildCache configuration
+gradle:
+  build_cache:
+    # Set to true to disable PUT uploads (read-only cache mode)
+    read_only: false
+
+    # Maximum accepted Gradle cache upload body size
+    # Required and must be > 0
+    max_upload_size: "100MB"
+
+    # Evict entries older than this age (set to "0" to disable age-based eviction)
+    max_age: "168h"
+
+    # Cap total Gradle cache size; oldest entries are deleted first
+    # ("0" disables size-based eviction)
+    # max_size: "20GB"
+
+    # How often eviction runs when max_age or max_size is set
+    sweep_interval: "10m"
+
+# Health endpoint configuration.
+health:
+  # Minimum time between storage backend probes.
+  # The /health endpoint runs a write/read/verify/delete round-trip
+  # against the configured storage backend and caches the result for
+  # this interval. Set to "0" to probe on every request.
+  # Default: "30s".
+  storage_probe_interval: "30s"
+
 # Version cooldown configuration
 # Hides package versions published too recently, giving the community time
 # to spot malicious releases before they're pulled into projects.

docs/architecture.md

@@ -14,7 +14,7 @@ The proxy is a caching HTTP server that sits between package manager clients and
 │  │  /npm/*     -> NPMHandler      /health  -> healthHandler  │    │
 │  │  /cargo/*   -> CargoHandler    /stats   -> statsHandler   │    │
 │  │  /gem/*     -> GemHandler      /metrics -> prometheus     │    │
-│  │  ...16 ecosystems              /api/*   -> APIHandler     │    │
+│  │  ...17 ecosystems              /api/*   -> APIHandler     │    │
 │  │                                /        -> Web UI         │    │
 │  └──────────────────────────────────────────────────────────┘    │
 │         │                    │                    │               │
@@ -161,11 +161,25 @@ vulnerabilities (
     updated_at    DATETIME
 )
 -- indexes: (vuln_id, ecosystem, package_name) unique, (ecosystem, package_name)
+
+metadata_cache (
+    id            INTEGER PRIMARY KEY,
+    ecosystem     TEXT NOT NULL,
+    name          TEXT NOT NULL,
+    storage_path  TEXT NOT NULL,
+    etag          TEXT,
+    content_type  TEXT,
+    size          INTEGER,           -- BIGINT on Postgres
+    fetched_at    DATETIME,
+    created_at    DATETIME,
+    updated_at    DATETIME
+)
+-- indexes: (ecosystem, name) unique
 ```
 
 On PostgreSQL, `INTEGER PRIMARY KEY` becomes `SERIAL`, `DATETIME` becomes `TIMESTAMP`, `INTEGER DEFAULT 0` booleans become `BOOLEAN DEFAULT FALSE`, and size/count columns use `BIGINT`.
 
-The `MigrateSchema()` function handles backward compatibility with older git-pkgs databases by adding missing columns via `ALTER TABLE` as needed.
+The `MigrateSchema()` function handles backward compatibility with older git-pkgs databases by running named migrations that add missing columns and tables. See [migrations.md](migrations.md) for how to add new schema changes.
 
 **Key operations:**
 - `GetPackageByPURL()` - Look up package by PURL
@@ -263,20 +277,26 @@ HTTP server setup, web UI, and API handlers.
 - Web UI: dashboard, package browser, source browser, version comparison
 - Templates are embedded in the binary via `//go:embed`
 - Enrichment API for package metadata, vulnerability scanning, and outdated detection
-- Health, stats, and Prometheus metrics endpoints
+- Health, stats, and Prometheus metrics endpoints. `/health` runs an active write → size-check → read → verify → delete probe against the storage backend and returns a structured JSON response (`HealthResponse`) with `"ok"` / `"error"` status per subsystem. Probe results are cached (default 30 s, configurable via `health.storage_probe_interval`) to avoid overwhelming remote backends.
 
 ### `internal/metrics`
 
 Prometheus metrics for cache performance, upstream latency, storage operations, and active requests. See the Monitoring section of the README for the full metric list.
 
-### `internal/cooldown`
+### Cooldown
 
-Version age filtering for supply chain attack mitigation. Configurable at global, ecosystem, and per-package levels. Supported by npm, PyPI, pub.dev, and Composer handlers.
+Version age filtering for supply chain attack mitigation, provided by [github.com/git-pkgs/cooldown](https://github.com/git-pkgs/cooldown). Configurable at global, ecosystem, and per-package levels. Supported by npm, PyPI, pub.dev, and Composer handlers.
 
 ### `internal/enrichment`
 
 Package metadata enrichment. Fetches license, description, homepage, repository URL, and vulnerability data from upstream registries. Powers the `/api/` endpoints and the web UI's package detail pages.
 
+### `internal/mirror`
+
+Selective package mirroring for pre-populating the proxy cache. Supports multiple input sources: individual PURLs (versioned or unversioned), CycloneDX/SPDX SBOM files, and full registry enumeration. Uses a bounded worker pool backed by `errgroup` to download artifacts in parallel, reusing `handler.Proxy.GetOrFetchArtifact()` for the actual fetch-and-cache work.
+
+The package also provides a `MetadataCache` for storing raw upstream metadata blobs so the proxy can serve metadata responses offline. The `JobStore` manages async mirror jobs exposed via the `/api/mirror` endpoints.
+
 ### `internal/config`
 
 Configuration loading.
@@ -326,10 +346,11 @@ Eviction can be implemented as:
 - Ensures clients fetch artifacts through proxy
 - Alternative: Let clients fetch directly, miss cache opportunity
 
-**Why not cache metadata?**
+**Why not cache metadata (by default)?**
 - Simplicity - no invalidation logic needed
 - Fresh data - new versions visible immediately
 - Metadata is small, upstream fetch is fast
+- Set `cache_metadata: true` or use the mirror command to enable metadata caching for offline use via the `metadata_cache` table
 
 **Why stream artifacts?**
 - Memory efficient - don't load large files into RAM

docs/configuration.md

@@ -114,6 +114,8 @@ Override default upstream registry URLs:
 ```yaml
 upstream:
   npm: "https://registry.npmjs.org"
+  maven: "https://repo1.maven.org/maven2"
+  gradle_plugin_portal: "https://plugins.gradle.org/m2"
   cargo: "https://index.crates.io"
   cargo_download: "https://static.crates.io/crates"
 ```
@@ -184,6 +186,30 @@ upstream:
       token: "${PRIVATE_TOKEN}"
 ```
 
+## Gradle Build Cache
+
+The `/gradle` endpoint supports optional safeguards for upload control and cache retention.
+
+```yaml
+gradle:
+  build_cache:
+    read_only: false
+    max_upload_size: "100MB"
+    max_age: "168h"
+    max_size: "20GB"
+    sweep_interval: "10m"
+```
+
+| Config | Environment | Description |
+|--------|-------------|-------------|
+| `gradle.build_cache.read_only` | `PROXY_GRADLE_BUILD_CACHE_READ_ONLY` | Disable PUT uploads and keep GET/HEAD read-only |
+| `gradle.build_cache.max_upload_size` | `PROXY_GRADLE_BUILD_CACHE_MAX_UPLOAD_SIZE` | Maximum accepted PUT body size (must be > 0) |
+| `gradle.build_cache.max_age` | `PROXY_GRADLE_BUILD_CACHE_MAX_AGE` | Delete entries older than this duration (default `168h`, set `0` to disable) |
+| `gradle.build_cache.max_size` | `PROXY_GRADLE_BUILD_CACHE_MAX_SIZE` | Total size cap for `_gradle/http-build-cache`, deleting oldest first (`0` disables) |
+| `gradle.build_cache.sweep_interval` | `PROXY_GRADLE_BUILD_CACHE_SWEEP_INTERVAL` | Frequency for background eviction sweeps |
+
+`max_age` and `max_size` are independent and can be combined. When both are set, age-based eviction runs first, then size-based eviction trims remaining entries oldest-first.
+
 ## Cooldown
 
 The cooldown feature hides package versions published too recently, giving the community time to spot malicious releases before they reach your projects. When a version is within its cooldown period, it's stripped from metadata responses so package managers won't install it.
@@ -209,7 +235,68 @@ Durations support days (`7d`), hours (`48h`), and minutes (`30m`). Set to `0` to
 
 Resolution order: package override, then ecosystem override, then global default. This lets you set a conservative default while exempting trusted packages.
 
-Currently supported for npm, PyPI, pub.dev, and Composer. These ecosystems include publish timestamps in their metadata. Other ecosystems (Go, Cargo, RubyGems) would require extra API calls and are not yet supported.
+Currently supported for npm, PyPI, pub.dev, Composer, Cargo, NuGet, Conda, RubyGems, and Hex. These ecosystems include publish timestamps in their metadata.
+
+Note: Hex cooldown requires disabling registry signature verification since the proxy re-encodes the protobuf payload without the original signature. Set `HEX_NO_VERIFY_REPO_ORIGIN=1` or configure your repo with `no_verify: true`.
+
+## Metadata Caching
+
+By default the proxy fetches metadata fresh from upstream on every request. Enable `cache_metadata` to store metadata responses in the database and storage backend for offline fallback. When upstream is unreachable, the proxy serves the last cached copy. ETag-based revalidation avoids re-downloading unchanged metadata.
+
+```yaml
+cache_metadata: true
+```
+
+Or via environment variable: `PROXY_CACHE_METADATA=true`.
+
+The `proxy mirror` command always enables metadata caching regardless of this setting.
+
+### Metadata TTL
+
+When metadata caching is enabled, `metadata_ttl` controls how long a cached response is considered fresh before revalidating with upstream. During the TTL window, cached metadata is served directly without contacting upstream, reducing latency and upstream load.
+
+```yaml
+metadata_ttl: "5m"   # default
+```
+
+Or via environment variable: `PROXY_METADATA_TTL=10m`.
+
+Set to `"0"` to always revalidate with upstream (ETag-based conditional requests still avoid re-downloading unchanged content).
+
+When upstream is unreachable and the cached entry is past its TTL, the proxy serves the stale cached copy with a `Warning: 110 - "Response is Stale"` header so clients can tell the data may be outdated.
+
+## Mirror API
+
+The `/api/mirror` endpoints are disabled by default. Enable them to allow starting mirror jobs via HTTP:
+
+```yaml
+mirror_api: true
+```
+
+Or via environment variable: `PROXY_MIRROR_API=true`.
+
+When disabled, the endpoints are not registered and return 404.
+
+## Mirror Command
+
+The `proxy mirror` command pre-populates the cache from various sources. It accepts the same storage and database flags as `serve`.
+
+| Flag | Default | Description |
+|------|---------|-------------|
+| `--sbom` | | Path to CycloneDX or SPDX SBOM file |
+| `--concurrency` | `4` | Number of parallel downloads |
+| `--dry-run` | `false` | Show what would be mirrored without downloading |
+| `--config` | | Path to configuration file |
+| `--storage-url` | | Storage URL |
+| `--database-driver` | | Database driver |
+| `--database-path` | | SQLite database file |
+| `--database-url` | | PostgreSQL connection URL |
+
+Positional arguments are treated as PURLs:
+
+```bash
+proxy mirror pkg:npm/lodash@4.17.21 pkg:cargo/serde@1.0.0
+```
 
 ## Docker
 

docs/migrations.md

@@ -0,0 +1,51 @@
+# Database Migrations
+
+Schema changes are tracked in a `migrations` table. Each migration has a name and a function. On startup, `MigrateSchema()` loads the set of already-applied names in one query and runs anything new.
+
+Fresh databases created via `Create()` get the full schema and all migrations are recorded as already applied.
+
+## Adding a migration
+
+In `internal/database/schema.go`:
+
+1. Write a migration function:
+
+```go
+func migrateAddWidgetColumn(db *DB) error {
+    hasCol, err := db.HasColumn("packages", "widget")
+    if err != nil {
+        return fmt.Errorf("checking column widget: %w", err)
+    }
+    if !hasCol {
+        colType := "TEXT"
+        if db.dialect == DialectPostgres {
+            colType = "TEXT" // adjust if types differ
+        }
+        if _, err := db.Exec(fmt.Sprintf("ALTER TABLE packages ADD COLUMN widget %s", colType)); err != nil {
+            return fmt.Errorf("adding column widget: %w", err)
+        }
+    }
+    return nil
+}
+```
+
+2. Append it to the `migrations` slice with the next sequential prefix:
+
+```go
+var migrations = []migration{
+    {"001_add_packages_enrichment_columns", migrateAddPackagesEnrichmentColumns},
+    {"002_add_versions_enrichment_columns", migrateAddVersionsEnrichmentColumns},
+    {"003_ensure_artifacts_table", migrateEnsureArtifactsTable},
+    {"004_ensure_vulnerabilities_table", migrateEnsureVulnerabilitiesTable},
+    {"005_add_widget_column", migrateAddWidgetColumn}, // new
+}
+```
+
+3. Add the same column to both `schemaSQLite` and `schemaPostgres` at the top of the file so fresh databases start with the full schema.
+
+## Rules
+
+- Migration functions must be idempotent. Use `HasColumn`/`HasTable` checks or `IF NOT EXISTS` clauses so they're safe to run against a database that already has the change.
+- Handle both SQLite and Postgres dialects. Common differences: `DATETIME` vs `TIMESTAMP`, `INTEGER DEFAULT 0` vs `BOOLEAN DEFAULT FALSE`, `INTEGER PRIMARY KEY` vs `SERIAL PRIMARY KEY`.
+- Never reorder or rename existing entries. The name string is the migration's identity in the database.
+- Never remove old migrations from the list. They won't run on already-migrated databases, but they need to exist for older databases upgrading for the first time.

docs/swagger/docs.go

@@ -64,13 +64,13 @@ const docTemplate = `{
                     "404": {
                         "description": "Not Found",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -126,19 +126,19 @@ const docTemplate = `{
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "404": {
                         "description": "Not Found",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -177,13 +177,13 @@ const docTemplate = `{
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -240,13 +240,13 @@ const docTemplate = `{
                     "404": {
                         "description": "Not Found",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -285,122 +285,13 @@ const docTemplate = `{
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/package/{ecosystem}/{name}": {
-            "get": {
-                "description": "Returns enriched package metadata. URL-encode scoped names (e.g. @scope/name -\u003e %40scope%2Fname).",
-                "produces": [
-                    "application/json"
-                ],
-                "tags": [
-                    "api"
-                ],
-                "summary": "Get package metadata",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "Ecosystem",
-                        "name": "ecosystem",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Package name",
-                        "name": "name",
-                        "in": "path",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "OK",
-                        "schema": {
-                            "$ref": "#/definitions/server.PackageResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "Bad Request",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "404": {
-                        "description": "Not Found",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "500": {
-                        "description": "Internal Server Error",
-                        "schema": {
-                            "type": "string"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/package/{ecosystem}/{name}/{version}": {
-            "get": {
-                "description": "Returns enriched package+version metadata and vulnerability data.",
-                "produces": [
-                    "application/json"
-                ],
-                "tags": [
-                    "api"
-                ],
-                "summary": "Get version metadata and vulnerabilities",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "Ecosystem",
-                        "name": "ecosystem",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Package name",
-                        "name": "name",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Version",
-                        "name": "version",
-                        "in": "path",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "OK",
-                        "schema": {
-                            "$ref": "#/definitions/server.EnrichmentResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "Bad Request",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "500": {
-                        "description": "Internal Server Error",
-                        "schema": {
-                            "type": "string"
                         }
                     }
                 }
@@ -447,13 +338,13 @@ const docTemplate = `{
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -493,115 +384,13 @@ const docTemplate = `{
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/vulns/{ecosystem}/{name}": {
-            "get": {
-                "description": "Returns vulnerabilities for a package across versions, or for a specific version if provided.",
-                "produces": [
-                    "application/json"
-                ],
-                "tags": [
-                    "api"
-                ],
-                "summary": "Get vulnerabilities for a package or version",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "Ecosystem",
-                        "name": "ecosystem",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Package name",
-                        "name": "name",
-                        "in": "path",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "OK",
-                        "schema": {
-                            "$ref": "#/definitions/server.VulnsResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "Bad Request",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "500": {
-                        "description": "Internal Server Error",
-                        "schema": {
-                            "type": "string"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/vulns/{ecosystem}/{name}/{version}": {
-            "get": {
-                "description": "Returns vulnerabilities for a package across versions, or for a specific version if provided.",
-                "produces": [
-                    "application/json"
-                ],
-                "tags": [
-                    "api"
-                ],
-                "summary": "Get vulnerabilities for a package or version",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "Ecosystem",
-                        "name": "ecosystem",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Package name",
-                        "name": "name",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Version",
-                        "name": "version",
-                        "in": "path"
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "OK",
-                        "schema": {
-                            "$ref": "#/definitions/server.VulnsResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "Bad Request",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "500": {
-                        "description": "Internal Server Error",
-                        "schema": {
-                            "type": "string"
                         }
                     }
                 }
@@ -610,7 +399,7 @@ const docTemplate = `{
         "/health": {
             "get": {
                 "produces": [
-                    "text/plain"
+                    "application/json"
                 ],
                 "tags": [
                     "meta"
@@ -620,13 +409,13 @@ const docTemplate = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.HealthResponse"
                         }
                     },
                     "503": {
                         "description": "Service Unavailable",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.HealthResponse"
                         }
                     }
                 }
@@ -651,7 +440,7 @@ const docTemplate = `{
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -715,26 +504,42 @@ const docTemplate = `{
                 }
             }
         },
-        "server.EnrichmentResponse": {
+        "server.ErrorResponse": {
             "type": "object",
             "properties": {
-                "is_outdated": {
+                "code": {
-                    "type": "boolean"
-                },
-                "license_category": {
                     "type": "string"
                 },
-                "package": {
+                "message": {
-                    "$ref": "#/definitions/server.PackageResponse"
+                    "type": "string"
+                }
+            }
+        },
+        "server.HealthCheck": {
+            "type": "object",
+            "properties": {
+                "error": {
+                    "type": "string"
                 },
-                "version": {
+                "status": {
-                    "$ref": "#/definitions/server.VersionResponse"
+                    "type": "string"
                 },
-                "vulnerabilities": {
+                "step": {
-                    "type": "array",
+                    "type": "string"
-                    "items": {
+                }
-                        "$ref": "#/definitions/server.VulnResponse"
+            }
+        },
+        "server.HealthResponse": {
+            "type": "object",
+            "properties": {
+                "checks": {
+                    "type": "object",
+                    "additionalProperties": {
+                        "$ref": "#/definitions/server.HealthCheck"
                     }
+                },
+                "status": {
+                    "type": "string"
                 }
             }
         },
@@ -949,84 +754,6 @@ const docTemplate = `{
                     "type": "integer"
                 }
             }
-        },
-        "server.VersionResponse": {
-            "type": "object",
-            "properties": {
-                "ecosystem": {
-                    "type": "string"
-                },
-                "integrity": {
-                    "type": "string"
-                },
-                "is_outdated": {
-                    "type": "boolean"
-                },
-                "license": {
-                    "type": "string"
-                },
-                "name": {
-                    "type": "string"
-                },
-                "published_at": {
-                    "type": "string"
-                },
-                "version": {
-                    "type": "string"
-                },
-                "yanked": {
-                    "type": "boolean"
-                }
-            }
-        },
-        "server.VulnResponse": {
-            "type": "object",
-            "properties": {
-                "cvss_score": {
-                    "type": "number"
-                },
-                "fixed_version": {
-                    "type": "string"
-                },
-                "id": {
-                    "type": "string"
-                },
-                "references": {
-                    "type": "array",
-                    "items": {
-                        "type": "string"
-                    }
-                },
-                "severity": {
-                    "type": "string"
-                },
-                "summary": {
-                    "type": "string"
-                }
-            }
-        },
-        "server.VulnsResponse": {
-            "type": "object",
-            "properties": {
-                "count": {
-                    "type": "integer"
-                },
-                "ecosystem": {
-                    "type": "string"
-                },
-                "name": {
-                    "type": "string"
-                },
-                "version": {
-                    "type": "string"
-                },
-                "vulnerabilities": {
-                    "type": "array",
-                    "items": {
-                        "$ref": "#/definitions/server.VulnResponse"
-                    }
-                }
-            }
         }
     }
 }`

docs/swagger/swagger.json

@@ -57,13 +57,13 @@
                     "404": {
                         "description": "Not Found",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -119,19 +119,19 @@
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "404": {
                         "description": "Not Found",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -170,13 +170,13 @@
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -233,13 +233,13 @@
                     "404": {
                         "description": "Not Found",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -278,122 +278,13 @@
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/package/{ecosystem}/{name}": {
-            "get": {
-                "description": "Returns enriched package metadata. URL-encode scoped names (e.g. @scope/name -\u003e %40scope%2Fname).",
-                "produces": [
-                    "application/json"
-                ],
-                "tags": [
-                    "api"
-                ],
-                "summary": "Get package metadata",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "Ecosystem",
-                        "name": "ecosystem",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Package name",
-                        "name": "name",
-                        "in": "path",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "OK",
-                        "schema": {
-                            "$ref": "#/definitions/server.PackageResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "Bad Request",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "404": {
-                        "description": "Not Found",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "500": {
-                        "description": "Internal Server Error",
-                        "schema": {
-                            "type": "string"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/package/{ecosystem}/{name}/{version}": {
-            "get": {
-                "description": "Returns enriched package+version metadata and vulnerability data.",
-                "produces": [
-                    "application/json"
-                ],
-                "tags": [
-                    "api"
-                ],
-                "summary": "Get version metadata and vulnerabilities",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "Ecosystem",
-                        "name": "ecosystem",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Package name",
-                        "name": "name",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Version",
-                        "name": "version",
-                        "in": "path",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "OK",
-                        "schema": {
-                            "$ref": "#/definitions/server.EnrichmentResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "Bad Request",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "500": {
-                        "description": "Internal Server Error",
-                        "schema": {
-                            "type": "string"
                         }
                     }
                 }
@@ -440,13 +331,13 @@
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -486,115 +377,13 @@
                     "400": {
                         "description": "Bad Request",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     },
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/vulns/{ecosystem}/{name}": {
-            "get": {
-                "description": "Returns vulnerabilities for a package across versions, or for a specific version if provided.",
-                "produces": [
-                    "application/json"
-                ],
-                "tags": [
-                    "api"
-                ],
-                "summary": "Get vulnerabilities for a package or version",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "Ecosystem",
-                        "name": "ecosystem",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Package name",
-                        "name": "name",
-                        "in": "path",
-                        "required": true
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "OK",
-                        "schema": {
-                            "$ref": "#/definitions/server.VulnsResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "Bad Request",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "500": {
-                        "description": "Internal Server Error",
-                        "schema": {
-                            "type": "string"
-                        }
-                    }
-                }
-            }
-        },
-        "/api/vulns/{ecosystem}/{name}/{version}": {
-            "get": {
-                "description": "Returns vulnerabilities for a package across versions, or for a specific version if provided.",
-                "produces": [
-                    "application/json"
-                ],
-                "tags": [
-                    "api"
-                ],
-                "summary": "Get vulnerabilities for a package or version",
-                "parameters": [
-                    {
-                        "type": "string",
-                        "description": "Ecosystem",
-                        "name": "ecosystem",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Package name",
-                        "name": "name",
-                        "in": "path",
-                        "required": true
-                    },
-                    {
-                        "type": "string",
-                        "description": "Version",
-                        "name": "version",
-                        "in": "path"
-                    }
-                ],
-                "responses": {
-                    "200": {
-                        "description": "OK",
-                        "schema": {
-                            "$ref": "#/definitions/server.VulnsResponse"
-                        }
-                    },
-                    "400": {
-                        "description": "Bad Request",
-                        "schema": {
-                            "type": "string"
-                        }
-                    },
-                    "500": {
-                        "description": "Internal Server Error",
-                        "schema": {
-                            "type": "string"
                         }
                     }
                 }
@@ -603,7 +392,7 @@
         "/health": {
             "get": {
                 "produces": [
-                    "text/plain"
+                    "application/json"
                 ],
                 "tags": [
                     "meta"
@@ -613,13 +402,13 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.HealthResponse"
                         }
                     },
                     "503": {
                         "description": "Service Unavailable",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.HealthResponse"
                         }
                     }
                 }
@@ -644,7 +433,7 @@
                     "500": {
                         "description": "Internal Server Error",
                         "schema": {
-                            "type": "string"
+                            "$ref": "#/definitions/server.ErrorResponse"
                         }
                     }
                 }
@@ -708,26 +497,42 @@
                 }
             }
         },
-        "server.EnrichmentResponse": {
+        "server.ErrorResponse": {
             "type": "object",
             "properties": {
-                "is_outdated": {
+                "code": {
-                    "type": "boolean"
-                },
-                "license_category": {
                     "type": "string"
                 },
-                "package": {
+                "message": {
-                    "$ref": "#/definitions/server.PackageResponse"
+                    "type": "string"
+                }
+            }
+        },
+        "server.HealthCheck": {
+            "type": "object",
+            "properties": {
+                "error": {
+                    "type": "string"
                 },
-                "version": {
+                "status": {
-                    "$ref": "#/definitions/server.VersionResponse"
+                    "type": "string"
                 },
-                "vulnerabilities": {
+                "step": {
-                    "type": "array",
+                    "type": "string"
-                    "items": {
+                }
-                        "$ref": "#/definitions/server.VulnResponse"
+            }
+        },
+        "server.HealthResponse": {
+            "type": "object",
+            "properties": {
+                "checks": {
+                    "type": "object",
+                    "additionalProperties": {
+                        "$ref": "#/definitions/server.HealthCheck"
                     }
+                },
+                "status": {
+                    "type": "string"
                 }
             }
         },
@@ -942,84 +747,6 @@
                     "type": "integer"
                 }
             }
-        },
-        "server.VersionResponse": {
-            "type": "object",
-            "properties": {
-                "ecosystem": {
-                    "type": "string"
-                },
-                "integrity": {
-                    "type": "string"
-                },
-                "is_outdated": {
-                    "type": "boolean"
-                },
-                "license": {
-                    "type": "string"
-                },
-                "name": {
-                    "type": "string"
-                },
-                "published_at": {
-                    "type": "string"
-                },
-                "version": {
-                    "type": "string"
-                },
-                "yanked": {
-                    "type": "boolean"
-                }
-            }
-        },
-        "server.VulnResponse": {
-            "type": "object",
-            "properties": {
-                "cvss_score": {
-                    "type": "number"
-                },
-                "fixed_version": {
-                    "type": "string"
-                },
-                "id": {
-                    "type": "string"
-                },
-                "references": {
-                    "type": "array",
-                    "items": {
-                        "type": "string"
-                    }
-                },
-                "severity": {
-                    "type": "string"
-                },
-                "summary": {
-                    "type": "string"
-                }
-            }
-        },
-        "server.VulnsResponse": {
-            "type": "object",
-            "properties": {
-                "count": {
-                    "type": "integer"
-                },
-                "ecosystem": {
-                    "type": "string"
-                },
-                "name": {
-                    "type": "string"
-                },
-                "version": {
-                    "type": "string"
-                },
-                "vulnerabilities": {
-                    "type": "array",
-                    "items": {
-                        "$ref": "#/definitions/server.VulnResponse"
-                    }
-                }
-            }
         }
     }
 }

go.mod

@@ -3,27 +3,35 @@ module github.com/git-pkgs/proxy
 go 1.25.6
 
 require (
-	github.com/git-pkgs/archives v0.2.0
+	github.com/BurntSushi/toml v1.6.0
-	github.com/git-pkgs/enrichment v0.2.1
+	github.com/CycloneDX/cyclonedx-go v0.11.0
-	github.com/git-pkgs/purl v0.1.10
+	github.com/git-pkgs/archives v0.3.0
-	github.com/git-pkgs/registries v0.4.0
+	github.com/git-pkgs/cooldown v0.1.1
-	github.com/git-pkgs/spdx v0.1.2
+	github.com/git-pkgs/enrichment v0.2.3
-	github.com/git-pkgs/vers v0.2.4
+	github.com/git-pkgs/purl v0.1.12
-	github.com/git-pkgs/vulns v0.1.3
+	github.com/git-pkgs/registries v0.6.1
+	github.com/git-pkgs/spdx v0.1.4
+	github.com/git-pkgs/vers v0.2.6
+	github.com/git-pkgs/vulns v0.1.5
 	github.com/go-chi/chi/v5 v5.2.5
 	github.com/jmoiron/sqlx v1.4.0
-	github.com/lib/pq v1.12.0
+	github.com/lib/pq v1.12.3
 	github.com/prometheus/client_golang v1.23.2
 	github.com/prometheus/client_model v0.6.2
+	github.com/spdx/tools-golang v0.5.7
 	github.com/swaggo/swag v1.16.6
 	gocloud.dev v0.45.0
+	golang.org/x/sync v0.20.0
+	google.golang.org/protobuf v1.36.11
 	gopkg.in/yaml.v3 v3.0.1
-	modernc.org/sqlite v1.47.0
+	modernc.org/sqlite v1.50.1
 )
 
 require (
 	4d63.com/gocheckcompilerdirectives v1.3.0 // indirect
 	4d63.com/gochecknoglobals v0.2.2 // indirect
+	cloud.google.com/go/auth v0.18.2 // indirect
+	cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect
 	cloud.google.com/go/compute/metadata v0.9.0 // indirect
 	codeberg.org/chavacava/garif v0.2.0 // indirect
 	codeberg.org/polyfloyd/go-errorlint v1.9.0 // indirect
@@ -36,7 +44,13 @@ require (
 	github.com/Antonboom/errname v1.1.1 // indirect
 	github.com/Antonboom/nilnil v1.1.1 // indirect
 	github.com/Antonboom/testifylint v1.6.4 // indirect
-	github.com/BurntSushi/toml v1.6.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.1 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3 // indirect
+	github.com/Azure/go-autorest v14.2.0+incompatible // indirect
+	github.com/Azure/go-autorest/autorest/to v0.4.1 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.6.0 // indirect
 	github.com/Djarvur/go-err113 v0.1.1 // indirect
 	github.com/KyleBanks/depth v1.2.1 // indirect
 	github.com/Masterminds/semver/v3 v3.4.0 // indirect
@@ -51,6 +65,7 @@ require (
 	github.com/alfatraining/structtag v1.0.0 // indirect
 	github.com/alingse/asasalint v0.0.11 // indirect
 	github.com/alingse/nilnesserr v0.2.0 // indirect
+	github.com/anchore/go-struct-converter v0.1.0 // indirect
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
 	github.com/ashanbrown/forbidigo/v2 v2.3.0 // indirect
 	github.com/ashanbrown/makezero/v2 v2.1.0 // indirect
@@ -113,7 +128,8 @@ require (
 	github.com/fzipp/gocyclo v0.6.0 // indirect
 	github.com/ghostiam/protogetter v0.3.20 // indirect
 	github.com/git-pkgs/packageurl-go v0.3.1 // indirect
-	github.com/github/go-spdx/v2 v2.4.0 // indirect
+	github.com/git-pkgs/pom v0.1.4 // indirect
+	github.com/github/go-spdx/v2 v2.7.0 // indirect
 	github.com/go-critic/go-critic v0.14.3 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
@@ -133,6 +149,7 @@ require (
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/godoc-lint/godoc-lint v0.11.2 // indirect
 	github.com/gofrs/flock v0.13.0 // indirect
+	github.com/golang-jwt/jwt/v5 v5.3.0 // indirect
 	github.com/golangci/asciicheck v0.5.0 // indirect
 	github.com/golangci/dupl v0.0.0-20250308024227-f665c8d69b32 // indirect
 	github.com/golangci/go-printf-func-name v0.1.1 // indirect
@@ -145,8 +162,10 @@ require (
 	github.com/golangci/swaggoswag v0.0.0-20250504205917-77f2aca3143e // indirect
 	github.com/golangci/unconvert v0.0.0-20250410112200-a129a6e6413e // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/google/wire v0.7.0 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.12 // indirect
 	github.com/googleapis/gax-go/v2 v2.17.0 // indirect
 	github.com/gordonklaus/ineffassign v0.2.0 // indirect
 	github.com/gostaticanalysis/analysisutil v0.7.1 // indirect
@@ -169,6 +188,7 @@ require (
 	github.com/kkHAIKE/contextcheck v1.1.6 // indirect
 	github.com/kulti/thelper v0.7.1 // indirect
 	github.com/kunwardeep/paralleltest v1.0.15 // indirect
+	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/lasiar/canonicalheader v1.1.2 // indirect
 	github.com/ldez/exptostd v0.4.5 // indirect
 	github.com/ldez/gomoddirectives v0.8.0 // indirect
@@ -201,9 +221,11 @@ require (
 	github.com/nishanths/predeclared v0.2.2 // indirect
 	github.com/nunnatsa/ginkgolinter v0.23.0 // indirect
 	github.com/oapi-codegen/runtime v1.2.0 // indirect
+	github.com/package-url/packageurl-go v0.1.6 // indirect
 	github.com/pandatix/go-cvss v0.6.2 // indirect
 	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/common v0.67.5 // indirect
 	github.com/prometheus/procfs v0.20.1 // indirect
@@ -272,11 +294,12 @@ require (
 	go.uber.org/zap v1.27.1 // indirect
 	go.yaml.in/yaml/v2 v2.4.3 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/crypto v0.48.0 // indirect
 	golang.org/x/exp v0.0.0-20260218203240-3dfff04db8fa // indirect
 	golang.org/x/exp/typeparams v0.0.0-20260209203927-2842357ff358 // indirect
 	golang.org/x/mod v0.33.0 // indirect
 	golang.org/x/net v0.51.0 // indirect
-	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/oauth2 v0.35.0 // indirect
 	golang.org/x/sys v0.42.0 // indirect
 	golang.org/x/text v0.34.0 // indirect
 	golang.org/x/tools v0.42.0 // indirect
@@ -284,16 +307,15 @@ require (
 	google.golang.org/api v0.269.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260226221140-a57be14db171 // indirect
 	google.golang.org/grpc v1.79.1 // indirect
-	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	honnef.co/go/tools v0.7.0 // indirect
-	modernc.org/libc v1.70.0 // indirect
+	modernc.org/libc v1.72.3 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
 	mvdan.cc/gofumpt v0.9.2 // indirect
 	mvdan.cc/unparam v0.0.0-20251027182757-5beb8c8f8f15 // indirect
-	sigs.k8s.io/yaml v1.3.0 // indirect
+	sigs.k8s.io/yaml v1.6.0 // indirect
 )
 
 tool github.com/golangci/golangci-lint/v2/cmd/golangci-lint

go.sum

@@ -43,9 +43,31 @@ github.com/Antonboom/nilnil v1.1.1 h1:9Mdr6BYd8WHCDngQnNVV0b554xyisFioEKi30sksuf
 github.com/Antonboom/nilnil v1.1.1/go.mod h1:yCyAmSw3doopbOWhJlVci+HuyNRuHJKIv6V2oYQa8II=
 github.com/Antonboom/testifylint v1.6.4 h1:gs9fUEy+egzxkEbq9P4cpcMB6/G0DYdMeiFS87UiqmQ=
 github.com/Antonboom/testifylint v1.6.4/go.mod h1:YO33FROXX2OoUfwjz8g+gUxQXio5i9qpVy7nXGbxDD4=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0 h1:JXg2dwJUmPB9JmtVmdEB16APJ7jurfbY5jnfXpJoRMc=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0/go.mod h1:YD5h/ldMsG0XiIw7PdyNhLxaM317eFh5yNLccNfGdyw=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.1 h1:Hk5QBxZQC1jb2Fwj6mpzme37xbCDdNTxU7O9eb5+LB4=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.1/go.mod h1:IYus9qsFobWIc2YVwe/WPjcnyCkPKtnHAqUYeebc8z0=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2 h1:yz1bePFlP5Vws5+8ez6T3HWXPmwOK7Yvq8QxDBD3SKY=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2/go.mod h1:Pa9ZNPuoNu/GztvBSKk9J1cDJW6vk/n0zLtV4mgd8N8=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 h1:9iefClla7iYpfYWdzPCRDozdmndjTm8DXdpCzPajMgA=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2/go.mod h1:XtLgD3ZD34DAaVIIAyG3objl5DynM3CQ/vMcbBNJZGI=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.8.1 h1:/Zt+cDPnpC3OVDm/JKLOs7M2DKmLRIIp3XIx9pHHiig=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.8.1/go.mod h1:Ng3urmn6dYe8gnbCMoHHVl5APYz2txho3koEkV2o2HA=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3 h1:ZJJNFaQ86GVKQ9ehwqyAFE6pIfyicpuJ8IkVaPBc6/4=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3/go.mod h1:URuDvhmATVKqHBH9/0nOiNKk0+YcwfQ3WkK5PqHKxc8=
+github.com/Azure/go-autorest v14.2.0+incompatible h1:V5VMDjClD3GiElqLWO7mz2MxNAK/vTfRHdAubSIPRgs=
+github.com/Azure/go-autorest v14.2.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
+github.com/Azure/go-autorest/autorest/to v0.4.1 h1:CxNHBqdzTr7rLtdrtb5CMjJcDut+WNGCVv7OmS5+lTc=
+github.com/Azure/go-autorest/autorest/to v0.4.1/go.mod h1:EtaofgU4zmtvn1zT2ARsjRFdq9vXx0YWtmElwL+GZ9M=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1 h1:WJTmL004Abzc5wDB5VtZG2PJk5ndYDgVacGqfirKxjM=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1/go.mod h1:tCcJZ0uHAmvjsVYzEFivsRTN00oz5BEsRgQHu5JZ9WE=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.6.0 h1:XRzhVemXdgvJqCH0sFfrBUTnUJSBrBf7++ypk+twtRs=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.6.0/go.mod h1:HKpQxkWaGLJ+D/5H8QRpyQXA1eKjxkFlOMwck5+33Jk=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/toml v1.6.0 h1:dRaEfpa2VI55EwlIW72hMRHdWouJeRF7TPYhI+AUQjk=
 github.com/BurntSushi/toml v1.6.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
+github.com/CycloneDX/cyclonedx-go v0.11.0 h1:GokP8FiRC+foiuwWhSSLpSD5H4hSWtGnR3wo7apkBFI=
+github.com/CycloneDX/cyclonedx-go v0.11.0/go.mod h1:vUvbCXQsEm48OI6oOlanxstwNByXjCZ2wuleUlwGEO8=
 github.com/Djarvur/go-err113 v0.1.1 h1:eHfopDqXRwAi+YmCUas75ZE0+hoBHJ2GQNLYRSxao4g=
 github.com/Djarvur/go-err113 v0.1.1/go.mod h1:IaWJdYFLg76t2ihfflPZnM1LIQszWOsFDh2hhhAVF6k=
 github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.30.0 h1:sBEjpZlNHzK1voKq9695PJSX2o5NEXl7/OL3coiIY0c=
@@ -85,6 +107,8 @@ github.com/alingse/asasalint v0.0.11 h1:SFwnQXJ49Kx/1GghOFz1XGqHYKp21Kq1nHad/0WQ
 github.com/alingse/asasalint v0.0.11/go.mod h1:nCaoMhw7a9kSJObvQyVzNTPBDbNpdocqrSP7t/cW5+I=
 github.com/alingse/nilnesserr v0.2.0 h1:raLem5KG7EFVb4UIDAXgrv3N2JIaffeKNtcEXkEWd/w=
 github.com/alingse/nilnesserr v0.2.0/go.mod h1:1xJPrXonEtX7wyTq8Dytns5P2hNzoWymVUIaKm4HNFg=
+github.com/anchore/go-struct-converter v0.1.0 h1:2rDRssAl6mgKBSLNiVCMADgZRhoqtw9dedlWa0OhD30=
+github.com/anchore/go-struct-converter v0.1.0/go.mod h1:rYqSE9HbjzpHTI74vwPvae4ZVYZd1lue2ta6xHPdblA=
 github.com/apapsch/go-jsonmerge/v2 v2.0.0 h1:axGnT1gRIfimI7gJifB699GoE/oq+F2MU7Dml6nw9rQ=
 github.com/apapsch/go-jsonmerge/v2 v2.0.0/go.mod h1:lvDnEdqiQrp0O42VQGgmlKpxL1AP2+08jFMw88y4klk=
 github.com/ashanbrown/forbidigo/v2 v2.3.0 h1:OZZDOchCgsX5gvToVtEBoV2UWbFfI6RKQTir2UZzSxo=
@@ -144,6 +168,8 @@ github.com/bombsimon/wsl/v4 v4.7.0 h1:1Ilm9JBPRczjyUs6hvOPKvd7VL1Q++PL8M0SXBDf+j
 github.com/bombsimon/wsl/v4 v4.7.0/go.mod h1:uV/+6BkffuzSAVYD+yGyld1AChO7/EuLrCF/8xTiapg=
 github.com/bombsimon/wsl/v5 v5.6.0 h1:4z+/sBqC5vUmSp1O0mS+czxwH9+LKXtCWtHH9rZGQL8=
 github.com/bombsimon/wsl/v5 v5.6.0/go.mod h1:Uqt2EfrMj2NV8UGoN1f1Y3m0NpUVCsUdrNCdet+8LvU=
+github.com/bradleyjkemp/cupaloy/v2 v2.8.0 h1:any4BmKE+jGIaMpnU8YgH/I2LPiLBufr6oMMlVBbn9M=
+github.com/bradleyjkemp/cupaloy/v2 v2.8.0/go.mod h1:bm7JXdkRd4BHJk9HpwqAI8BoAY1lps46Enkdqw6aRX0=
 github.com/breml/bidichk v0.3.3 h1:WSM67ztRusf1sMoqH6/c4OBCUlRVTKq+CbSeo0R17sE=
 github.com/breml/bidichk v0.3.3/go.mod h1:ISbsut8OnjB367j5NseXEGGgO/th206dVa427kR8YTE=
 github.com/breml/errchkjson v0.4.1 h1:keFSS8D7A2T0haP9kzZTi7o26r7kE3vymjZNeNDRDwg=
@@ -224,24 +250,28 @@ github.com/fzipp/gocyclo v0.6.0 h1:lsblElZG7d3ALtGMx9fmxeTKZaLLpU8mET09yN4BBLo=
 github.com/fzipp/gocyclo v0.6.0/go.mod h1:rXPyn8fnlpa0R2csP/31uerbiVBugk5whMdlyaLkLoA=
 github.com/ghostiam/protogetter v0.3.20 h1:oW7OPFit2FxZOpmMRPP9FffU4uUpfeE/rEdE1f+MzD0=
 github.com/ghostiam/protogetter v0.3.20/go.mod h1:FjIu5Yfs6FT391m+Fjp3fbAYJ6rkL/J6ySpZBfnODuI=
-github.com/git-pkgs/archives v0.2.0 h1:8OuuGwAB+Eww8/1ayyYpZzP0wVEH0/VWBG3mQrfi9SM=
+github.com/git-pkgs/archives v0.3.0 h1:iXKyO83jEFub1PGEDlHmk2tQ7XeV5LySTc0sEkH3x78=
-github.com/git-pkgs/archives v0.2.0/go.mod h1:LTJ1iQVFA7otizWMOyiI82NYVmyBWAPRzwu/e30rcXU=
+github.com/git-pkgs/archives v0.3.0/go.mod h1:LTJ1iQVFA7otizWMOyiI82NYVmyBWAPRzwu/e30rcXU=
-github.com/git-pkgs/enrichment v0.2.1 h1:mJJt4YQBzl9aOfu4226ylnC9H6YO9YZDjGpbSPVahKc=
+github.com/git-pkgs/cooldown v0.1.1 h1:9OqqzCB8gANz/y44SmqGD0Jp8Qtu81D1sCbKl6Ehg7w=
-github.com/git-pkgs/enrichment v0.2.1/go.mod h1:q9eDZpRrUbYwzD4Mtg/T6LRdBMlt2DYRIvVRDULFnKg=
+github.com/git-pkgs/cooldown v0.1.1/go.mod h1:v7APuK/UouTiu8mWQZbdDmj7DfxxkGUeuhjaRB5gv9E=
+github.com/git-pkgs/enrichment v0.2.3 h1:42mqoUhQZNGhlEO671pboI/Cu6F+DoffJoFbVhb2jlw=
+github.com/git-pkgs/enrichment v0.2.3/go.mod h1:MBv5nhHzjwLxeSgx2+7waCcpReUjhCD+9B0bvufpMO0=
 github.com/git-pkgs/packageurl-go v0.3.1 h1:WM3RBABQZLaRBxgKyYughc3cVBE8KyQxbSC6Jt5ak7M=
 github.com/git-pkgs/packageurl-go v0.3.1/go.mod h1:rcIxiG37BlQLB6FZfgdj9Fm7yjhRQd3l+5o7J0QPAk4=
-github.com/git-pkgs/purl v0.1.10 h1:NMjeF10nzFn3tdQlz6rbmHB+i+YkyrFQxho3e33ePTQ=
+github.com/git-pkgs/pom v0.1.4 h1:C6st+XSbF75eKuwfdkDZZtYHoTcaWRIEQYar5VtszUo=
-github.com/git-pkgs/purl v0.1.10/go.mod h1:C5Vp/kyZ/wGckCLexx4wPVfUxEiToRkdsOPh5Z7ig/I=
+github.com/git-pkgs/pom v0.1.4/go.mod h1:ufdMBe1lKzqOeP9IUb9NPZ458xKV8E8NvuyBMxOfwIk=
-github.com/git-pkgs/registries v0.4.0 h1:GO7fQ8/jot0ulSQHBdxLSNSX/p8eB3gEXWO+98fmoEo=
+github.com/git-pkgs/purl v0.1.12 h1:qCskrEU1LWQhCkIVZd992W5++Bsxazvx2Cx1/65qCvU=
-github.com/git-pkgs/registries v0.4.0/go.mod h1:49UCPFWQmwNV7rBEr9TrTDWKR7vYxFcxp3VfdkeFbdE=
+github.com/git-pkgs/purl v0.1.12/go.mod h1:ofp4mHsR0cUeVONQaf33n6Wxg2QTEvtUdRfCedI8ouA=
-github.com/git-pkgs/spdx v0.1.2 h1:wHSK+CqFsO5N7yDTPvxDmer5LgNEa7vAsiZhi5Aci0A=
+github.com/git-pkgs/registries v0.6.1 h1:xZfVZQmffIfdeJthn5o2EozbVJ6gBeImYwKQnfdKUfU=
-github.com/git-pkgs/spdx v0.1.2/go.mod h1:V98MgZapNgYw54/pdGR82d7RU93qzJoybahbpZqTfw8=
+github.com/git-pkgs/registries v0.6.1/go.mod h1:a3BP/56VW3O/CFRqiJCtSy+OqRrSH25wF1PWHP76ka0=
-github.com/git-pkgs/vers v0.2.4 h1:Zr3jR/Xf1i/6cvBaJKPxhCwjzqz7uvYHE0Fhid/GPBk=
+github.com/git-pkgs/spdx v0.1.4 h1:eQ0waEV3uUeItpWAOvdN1K1rL9hTgsU7fF74r1mDXMs=
-github.com/git-pkgs/vers v0.2.4/go.mod h1:biTbSQK1qdbrsxDEKnqe3Jzclxz8vW6uDcwKjfUGcOo=
+github.com/git-pkgs/spdx v0.1.4/go.mod h1:cqRoZcvl530s/W+oGNvwjt4ODN8T1W6D/20MUZEFdto=
-github.com/git-pkgs/vulns v0.1.3 h1:Q9GixxhAYpP5vVDetKNMACHxGnWwB8aE5c9kbE8xxqU=
+github.com/git-pkgs/vers v0.2.6 h1:IelZd7BP/JhzTloUTDY67nehUgoYva3g9viqAMCHJg8=
-github.com/git-pkgs/vulns v0.1.3/go.mod h1:/PVy7S1oZNVF9X8yVOZ9SX5MFpyVWCtLnIX0kAfPjY0=
+github.com/git-pkgs/vers v0.2.6/go.mod h1:biTbSQK1qdbrsxDEKnqe3Jzclxz8vW6uDcwKjfUGcOo=
-github.com/github/go-spdx/v2 v2.4.0 h1:+4IwVwJJbm3rzvrQ6P1nI9BDMcy3la4RchRy5uehV/M=
+github.com/git-pkgs/vulns v0.1.5 h1:mtX88/27toFl+B95kaH5QbAdOCQ3YIDGjJrlrrnqQTE=
-github.com/github/go-spdx/v2 v2.4.0/go.mod h1:/5rwgS0txhGtRdUZwc02bTglzg6HK3FfuEbECKlK2Sg=
+github.com/git-pkgs/vulns v0.1.5/go.mod h1:bZFikfrR/5gC0ZMwXh7qcEu2gpKfXMBhVsy4kF12Ae0=
+github.com/github/go-spdx/v2 v2.7.0 h1:GzfXx4wFdlilARxmFRXW/mgUy3A4vSqZocCMFV6XFdQ=
+github.com/github/go-spdx/v2 v2.7.0/go.mod h1:Ftc45YYG1WzpzwEPKRVm9Jv8vDqOrN4gWoCkK+bHer0=
 github.com/go-chi/chi/v5 v5.2.5 h1:Eg4myHZBjyvJmAFjFvWgrqDTXFyOzjj7YIm3L3mu6Ug=
 github.com/go-chi/chi/v5 v5.2.5/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
 github.com/go-critic/go-critic v0.14.3 h1:5R1qH2iFeo4I/RJU8vTezdqs08Egi4u5p6vOESA0pog=
@@ -299,6 +329,8 @@ github.com/godoc-lint/godoc-lint v0.11.2 h1:Bp0FkJWoSdNsBikdNgIcgtaoo+xz6I/Y9s5W
 github.com/godoc-lint/godoc-lint v0.11.2/go.mod h1:iVpGdL1JCikNH2gGeAn3Hh+AgN5Gx/I/cxV+91L41jo=
 github.com/gofrs/flock v0.13.0 h1:95JolYOvGMqeH31+FC7D2+uULf6mG61mEZ/A8dRYMzw=
 github.com/gofrs/flock v0.13.0/go.mod h1:jxeyy9R1auM5S6JYDBhDt+E2TCo7DkratH4Pgi8P+Z0=
+github.com/golang-jwt/jwt/v5 v5.3.0 h1:pv4AsKCKKZuqlgs5sUmn4x8UlGa0kEVt/puTpKx9vvo=
+github.com/golang-jwt/jwt/v5 v5.3.0/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
 github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
 github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
 github.com/golangci/asciicheck v0.5.0 h1:jczN/BorERZwK8oiFBOGvlGPknhvq0bjnysTj4nUfo0=
@@ -390,6 +422,8 @@ github.com/julz/importas v0.2.0 h1:y+MJN/UdL63QbFJHws9BVC5RpA2iq0kpjrFajTGivjQ=
 github.com/julz/importas v0.2.0/go.mod h1:pThlt589EnCYtMnmhmRYY/qn9lCf/frPOK+WMx3xiJY=
 github.com/karamaru-alpha/copyloopvar v1.2.2 h1:yfNQvP9YaGQR7VaWLYcfZUlRP2eo2vhExWKxD/fP6q0=
 github.com/karamaru-alpha/copyloopvar v1.2.2/go.mod h1:oY4rGZqZ879JkJMtX3RRkcXRkmUvH0x35ykgaKgsgJY=
+github.com/keybase/go-keychain v0.0.1 h1:way+bWYa6lDppZoZcgMbYsvC7GxljxrskdNInRtuthU=
+github.com/keybase/go-keychain v0.0.1/go.mod h1:PdEILRW3i9D8JcdM+FmY6RwkHGnhHxXwkPPMeUgOK1k=
 github.com/kisielk/errcheck v1.9.0 h1:9xt1zI9EBfcYBvdU1nVrzMzzUPUtPKs9bVSIM3TAb3M=
 github.com/kisielk/errcheck v1.9.0/go.mod h1:kQxWMMVZgIkDq7U8xtG/n2juOjbLgZtedi0D+/VL/i8=
 github.com/kkHAIKE/contextcheck v1.1.6 h1:7HIyRcnyzxL9Lz06NGhiKvenXq7Zw6Q0UQu/ttjfJCE=
@@ -426,8 +460,8 @@ github.com/ldez/usetesting v0.5.0/go.mod h1:Spnb4Qppf8JTuRgblLrEWb7IE6rDmUpGvxY3
 github.com/leonklingele/grouper v1.1.2 h1:o1ARBDLOmmasUaNDesWqWCIFH3u7hoFlM84YrjT3mIY=
 github.com/leonklingele/grouper v1.1.2/go.mod h1:6D0M/HVkhs2yRKRFZUoGjeDy7EZTfFBE9gl4kjmIGkA=
 github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
-github.com/lib/pq v1.12.0 h1:mC1zeiNamwKBecjHarAr26c/+d8V5w/u4J0I/yASbJo=
+github.com/lib/pq v1.12.3 h1:tTWxr2YLKwIvK90ZXEw8GP7UFHtcbTtty8zsI+YjrfQ=
-github.com/lib/pq v1.12.0/go.mod h1:/p+8NSbOcwzAEI7wiMXFlgydTwcgTr3OSKMsD2BitpA=
+github.com/lib/pq v1.12.3/go.mod h1:/p+8NSbOcwzAEI7wiMXFlgydTwcgTr3OSKMsD2BitpA=
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
 github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/macabu/inamedparam v0.2.0 h1:VyPYpOc10nkhI2qeNUdh3Zket4fcZjEWe35poddBCpE=
@@ -495,6 +529,8 @@ github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95/go.mod h1:9qAhocn7zKJ
 github.com/otiai10/curr v1.0.0/go.mod h1:LskTG5wDwr8Rs+nNQ+1LlxRjAtTZZjtJW4rMXl6j4vs=
 github.com/otiai10/mint v1.3.0/go.mod h1:F5AjcsTsWUqX+Na9fpHb52P8pcRX2CI6A3ctIT91xUo=
 github.com/otiai10/mint v1.3.1/go.mod h1:/yxELlJQ0ufhjUwhshSj+wFjZ78CnZ48/1wtmBH1OTc=
+github.com/package-url/packageurl-go v0.1.6 h1:YO3p6u1XmCUliivUg/qWphaY8vI6hxSnnPv7Bfg3m5M=
+github.com/package-url/packageurl-go v0.1.6/go.mod h1:nKAWB8E6uk1MHqiS/lQb9pYBGH2+mdJ2PJc2s50dQY0=
 github.com/pandatix/go-cvss v0.6.2 h1:TFiHlzUkT67s6UkelHmK6s1INKVUG7nlKYiWWDTITGI=
 github.com/pandatix/go-cvss v0.6.2/go.mod h1:jDXYlQBZrc8nvrMUVVvTG8PhmuShOnKrxP53nOFkt8Q=
 github.com/pelletier/go-toml v1.9.5 h1:4yBQzkHv+7BHq2PQUZF3Mx0IYxG7LsP222s7Agd3ve8=
@@ -503,6 +539,8 @@ github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0
 github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
 github.com/peterbourgon/g2s v0.0.0-20170223122336-d4e7ad98afea h1:sKwxy1H95npauwu8vtF95vG/syrL0p8fSZo/XlDg5gk=
 github.com/peterbourgon/g2s v0.0.0-20170223122336-d4e7ad98afea/go.mod h1:1VcHEd3ro4QMoHfiNl/j7Jkln9+KQuorp0PItHMJYNg=
+github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ=
+github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjLxUqIJNnCWiEdr3bn6IUYi15bNlnbCCU=
 github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 h1:GFCKgmp0tecUJ0sJuv4pzYCqS9+RGSn52M3FUwPs+uo=
 github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10/go.mod h1:t/avpk3KcrXxUnYOhZhMXJlSEyie6gQbtLq5NM3loB8=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -568,6 +606,8 @@ github.com/sonatard/noctx v0.4.0 h1:7MC/5Gg4SQ4lhLYR6mvOP6mQVSxCrdyiExo7atBs27o=
 github.com/sonatard/noctx v0.4.0/go.mod h1:64XdbzFb18XL4LporKXp8poqZtPKbCrqQ402CV+kJas=
 github.com/sourcegraph/go-diff v0.7.0 h1:9uLlrd5T46OXs5qpp8L/MTltk0zikUGi0sNNyCpA8G0=
 github.com/sourcegraph/go-diff v0.7.0/go.mod h1:iBszgVvyxdc8SFZ7gm69go2KDdt3ag071iBaWPF6cjs=
+github.com/spdx/tools-golang v0.5.7 h1:+sWcKGnhwp3vLdMqPcLdA6QK679vd86cK9hQWH3AwCg=
+github.com/spdx/tools-golang v0.5.7/go.mod h1:jg7w0LOpoNAw6OxKEzCoqPC2GCTj45LyTlVmXubDsYw=
 github.com/spf13/afero v1.15.0 h1:b/YBCLWAJdFWJTN9cLhiXXcD7mzKn9Dm86dNnfyQw1I=
 github.com/spf13/afero v1.15.0/go.mod h1:NC2ByUVxtQs4b3sIUphxK0NioZnmxgyCrfzeuq8lxMg=
 github.com/spf13/cast v1.5.0 h1:rj3WzYc11XZaIZMPKmwP96zkFEnnAmV8s6XbB2aY32w=
@@ -606,6 +646,8 @@ github.com/tenntenn/modver v1.0.1 h1:2klLppGhDgzJrScMpkj9Ujy3rXPUspSjAcev9tSEBgA
 github.com/tenntenn/modver v1.0.1/go.mod h1:bePIyQPb7UeioSRkw3Q0XeMhYZSMx9B8ePqg6SAMGH0=
 github.com/tenntenn/text/transform v0.0.0-20200319021203-7eef512accb3 h1:f+jULpRQGxTSkNYKJ51yaw6ChIqO+Je8UqsTKN/cDag=
 github.com/tenntenn/text/transform v0.0.0-20200319021203-7eef512accb3/go.mod h1:ON8b8w4BN/kE1EOhwT0o+d62W65a6aPw1nouo9LMgyY=
+github.com/terminalstatic/go-xsd-validate v0.1.6 h1:TenYeQ3eY631qNi1/cTmLH/s2slHPRKTTHT+XSHkepo=
+github.com/terminalstatic/go-xsd-validate v0.1.6/go.mod h1:18lsvYFofBflqCrvo1umpABZ99+GneNTw2kEEc8UPJw=
 github.com/tetafro/godot v1.5.4 h1:u1ww+gqpRLiIA16yF2PV1CV1n/X3zhyezbNXC3E14Sg=
 github.com/tetafro/godot v1.5.4/go.mod h1:eOkMrVQurDui411nBY2FA05EYH01r14LuWY/NrVDVcU=
 github.com/timakin/bodyclose v0.0.0-20241222091800-1db5c5ca4d67 h1:9LPGD+jzxMlnk5r6+hJnar67cgpDIz/iyD+rfl5r2Vk=
@@ -628,6 +670,12 @@ github.com/uudashr/gocognit v1.2.0 h1:3BU9aMr1xbhPlvJLSydKwdLN3tEUUrzPSSM8S4hDYR
 github.com/uudashr/gocognit v1.2.0/go.mod h1:k/DdKPI6XBZO1q7HgoV2juESI2/Ofj9AcHPZhBBdrTU=
 github.com/uudashr/iface v1.4.1 h1:J16Xl1wyNX9ofhpHmQ9h9gk5rnv2A6lX/2+APLTo0zU=
 github.com/uudashr/iface v1.4.1/go.mod h1:pbeBPlbuU2qkNDn0mmfrxP2X+wjPMIQAy+r1MBXSXtg=
+github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f h1:J9EGpcZtP0E/raorCMxlFGSTBrsSlaDGf3jU/qvAE2c=
+github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=
+github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 h1:EzJWgHovont7NscjpAxXsDA8S8BMYve8Y5+7cuRE7R0=
+github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415/go.mod h1:GwrjFmJcFw6At/Gs6z4yjiIwzuJ1/+UwLxMQDVQXShQ=
+github.com/xeipuuv/gojsonschema v1.2.0 h1:LhYJRs+L4fBtjZUfuSZIKGeVu0QRy8e5Xi7D17UxZ74=
+github.com/xeipuuv/gojsonschema v1.2.0/go.mod h1:anYRn/JVcOK2ZgGU+IjEV4nwlhoK5sQluxsYJ78Id3Y=
 github.com/xen0n/gosmopolitan v1.3.0 h1:zAZI1zefvo7gcpbCOrPSHJZJYA9ZgLfJqtKzZ5pHqQM=
 github.com/xen0n/gosmopolitan v1.3.0/go.mod h1:rckfr5T6o4lBtM1ga7mLGKZmLxswUoH1zxHgNXOsEt4=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
@@ -755,6 +803,7 @@ golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20211105183446-c75c47738b0c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -835,10 +884,10 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.7.0 h1:w6WUp1VbkqPEgLz4rkBzH/CSU6HkoqNLp6GstyTx3lU=
 honnef.co/go/tools v0.7.0/go.mod h1:pm29oPxeP3P82ISxZDgIYeOaf9ta6Pi0EWvCFoLG2vc=
-modernc.org/cc/v4 v4.27.1 h1:9W30zRlYrefrDV2JE2O8VDtJ1yPGownxciz5rrbQZis=
+modernc.org/cc/v4 v4.28.2 h1:3tQ0lf2ADtoby2EtSP+J7IE2SHwEJdP8ioR59wx7XpY=
-modernc.org/cc/v4 v4.27.1/go.mod h1:uVtb5OGqUKpoLWhqwNQo/8LwvoiEBLvZXIQ/SmO6mL0=
+modernc.org/cc/v4 v4.28.2/go.mod h1:OnovgIhbbMXMu1aISnJ0wvVD1KnW+cAUJkIrAWh+kVI=
-modernc.org/ccgo/v4 v4.32.0 h1:hjG66bI/kqIPX1b2yT6fr/jt+QedtP2fqojG2VrFuVw=
+modernc.org/ccgo/v4 v4.34.0 h1:yRLPFZieg532OT4rp4JFNIVcquwalMX26G95WQDqwCQ=
-modernc.org/ccgo/v4 v4.32.0/go.mod h1:6F08EBCx5uQc38kMGl+0Nm0oWczoo1c7cgpzEry7Uc0=
+modernc.org/ccgo/v4 v4.34.0/go.mod h1:AS5WYMyBakQ+fhsHhtP8mWB82KTGPkNNJDGfGQCe0/A=
 modernc.org/fileutil v1.4.0 h1:j6ZzNTftVS054gi281TyLjHPp6CPHr2KCxEXjEbD6SM=
 modernc.org/fileutil v1.4.0/go.mod h1:EqdKFDxiByqxLk8ozOxObDSfcVOv/54xDs/DUHdvCUU=
 modernc.org/gc/v2 v2.6.5 h1:nyqdV8q46KvTpZlsw66kWqwXRHdjIlJOhG6kxiV/9xI=
@@ -847,18 +896,18 @@ modernc.org/gc/v3 v3.1.2 h1:ZtDCnhonXSZexk/AYsegNRV1lJGgaNZJuKjJSWKyEqo=
 modernc.org/gc/v3 v3.1.2/go.mod h1:HFK/6AGESC7Ex+EZJhJ2Gni6cTaYpSMmU/cT9RmlfYY=
 modernc.org/goabi0 v0.2.0 h1:HvEowk7LxcPd0eq6mVOAEMai46V+i7Jrj13t4AzuNks=
 modernc.org/goabi0 v0.2.0/go.mod h1:CEFRnnJhKvWT1c1JTI3Avm+tgOWbkOu5oPA8eH8LnMI=
-modernc.org/libc v1.70.0 h1:U58NawXqXbgpZ/dcdS9kMshu08aiA6b7gusEusqzNkw=
+modernc.org/libc v1.72.3 h1:ZnDF4tXn4NBXFutMMQC4vtbTFSXhhKzR73fv0beZEAU=
-modernc.org/libc v1.70.0/go.mod h1:OVmxFGP1CI/Z4L3E0Q3Mf1PDE0BucwMkcXjjLntvHJo=
+modernc.org/libc v1.72.3/go.mod h1:dn0dZNnnn1clLyvRxLxYExxiKRZIRENOfqQ8XEeg4Qs=
 modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
 modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
 modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
 modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
-modernc.org/opt v0.1.4 h1:2kNGMRiUjrp4LcaPuLY2PzUfqM/w9N23quVwhKt5Qm8=
+modernc.org/opt v0.2.0 h1:tGyef5ApycA7FSEOMraay9SaTk5zmbx7Tu+cJs4QKZg=
-modernc.org/opt v0.1.4/go.mod h1:03fq9lsNfvkYSfxrfUhZCWPk1lm4cq4N+Bh//bEtgns=
+modernc.org/opt v0.2.0/go.mod h1:03fq9lsNfvkYSfxrfUhZCWPk1lm4cq4N+Bh//bEtgns=
 modernc.org/sortutil v1.2.1 h1:+xyoGf15mM3NMlPDnFqrteY07klSFxLElE2PVuWIJ7w=
 modernc.org/sortutil v1.2.1/go.mod h1:7ZI3a3REbai7gzCLcotuw9AC4VZVpYMjDzETGsSMqJE=
-modernc.org/sqlite v1.47.0 h1:R1XyaNpoW4Et9yly+I2EeX7pBza/w+pmYee/0HJDyKk=
+modernc.org/sqlite v1.50.1 h1:l+cQvn0sd0zJJtfygGHuQJ5AjlrwXmWPw4KP3ZMwr9w=
-modernc.org/sqlite v1.47.0/go.mod h1:hWjRO6Tj/5Ik8ieqxQybiEOUXy0NJFNp2tpvVpKlvig=
+modernc.org/sqlite v1.50.1/go.mod h1:tcNzv5p84E0skkmJn038y+hWJbLQXQqEnQfeh5r2JLM=
 modernc.org/strutil v1.2.1 h1:UneZBkQA+DX2Rp35KcM69cSsNES9ly8mQWD71HKlOA0=
 modernc.org/strutil v1.2.1/go.mod h1:EHkiggD70koQxjVdSBM3JKM7k6L0FbGE5eymy9i3B9A=
 modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
@@ -867,5 +916,5 @@ mvdan.cc/gofumpt v0.9.2 h1:zsEMWL8SVKGHNztrx6uZrXdp7AX8r421Vvp23sz7ik4=
 mvdan.cc/gofumpt v0.9.2/go.mod h1:iB7Hn+ai8lPvofHd9ZFGVg2GOr8sBUw1QUWjNbmIL/s=
 mvdan.cc/unparam v0.0.0-20251027182757-5beb8c8f8f15 h1:ssMzja7PDPJV8FStj7hq9IKiuiKhgz9ErWw+m68e7DI=
 mvdan.cc/unparam v0.0.0-20251027182757-5beb8c8f8f15/go.mod h1:4M5MMXl2kW6fivUT6yRGpLLPNfuGtU2Z0cPvFquGDYU=
-sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo=
+sigs.k8s.io/yaml v1.6.0 h1:G8fkbMSAFqgEFgh4b1wmtzDnioxFCUgTZhlbj5P9QYs=
-sigs.k8s.io/yaml v1.3.0/go.mod h1:GeOyir5tyXNByN85N/dRIT9es5UQNerPYEKK56eTBm8=
+sigs.k8s.io/yaml v1.6.0/go.mod h1:796bPqUfzR/0jLAl6XjHl3Ck7MiyVv8dbTdyT3/pMf4=

internal/config/cargo/cargo.go

@@ -0,0 +1,78 @@
+package cargo
+
+import (
+	"fmt"
+	"net/url"
+)
+
+// Config configures routes
+type Config struct {
+	IncludeDefault bool          `json:"include_default" yaml:"include_default"`
+	Route          []RouteConfig `json:"route" yaml:"route"`
+}
+
+// RouteConfig configures a route
+type RouteConfig struct {
+	Path     string           `json:"path" yaml:"path"`
+	Upstream []UpstreamConfig `json:"upstream" yaml:"upstream"`
+}
+
+// UpstreamConfig configures an upstream (source)
+type UpstreamConfig struct {
+	Name   string `json:"name" yaml:"name"`
+	Index  string `json:"index" yaml:"index"`
+	Crates string `json:"crates" yaml:"crates"`
+}
+
+// RouteDefault is the default route
+var RouteDefault = RouteConfig{
+	Path: "/cargo",
+	Upstream: []UpstreamConfig{
+		{
+			Name:   "crates.io",
+			Index:  "https://index.crates.io",
+			Crates: "https://static.crates.io/crates",
+		},
+	},
+}
+
+func (c *Config) Validate() error {
+	for _, route := range c.Route {
+		if err := route.Validate(); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (r *RouteConfig) Validate() error {
+	// TODO: validate Path
+
+	if len(r.Upstream) == 0 {
+		return fmt.Errorf("cargo route %q does not have any upstreams", r.Path)
+	}
+	if len(r.Upstream) > 1 {
+		return fmt.Errorf("cargo route %q has multiple upstreams; this is not yet supported", r.Path)
+	}
+
+	for _, upstream := range r.Upstream {
+		if err := upstream.Validate(); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (u *UpstreamConfig) Validate() error {
+	if _, err := url.Parse(u.Index); err != nil {
+		return fmt.Errorf("cargo upstream index %q is not a valid URL", u.Index)
+	}
+
+	if _, err := url.Parse(u.Crates); err != nil {
+		return fmt.Errorf("cargo upstream crates %q is not a valid URL", u.Crates)
+	}
+
+	return nil
+}

internal/config/config.go

@@ -51,11 +51,15 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
+	"net/url"
 	"os"
 	"path/filepath"
 	"strconv"
 	"strings"
+	"time"
 
+	"github.com/git-pkgs/proxy/internal/config/cargo"
+	"github.com/git-pkgs/proxy/internal/config/debian"
 	"gopkg.in/yaml.v3"
 )
 
@@ -81,8 +85,31 @@ type Config struct {
 	// Upstream configures upstream registry URLs (optional overrides).
 	Upstream UpstreamConfig `json:"upstream" yaml:"upstream"`
 
+	// Ecosystem configures ecosystem routes and upstreams
+	Ecosystem EcosystemConfig `json:"ecosystem" yaml:"ecosystem"`
+
 	// Cooldown configures version age filtering to mitigate supply chain attacks.
 	Cooldown CooldownConfig `json:"cooldown" yaml:"cooldown"`
+
+	// CacheMetadata enables caching of upstream metadata responses for offline fallback.
+	// When enabled, metadata is stored in the database and storage backend.
+	// The mirror command always enables this regardless of this setting.
+	CacheMetadata bool `json:"cache_metadata" yaml:"cache_metadata"`
+
+	// MetadataTTL is how long cached metadata is considered fresh before
+	// revalidating with upstream. Uses Go duration syntax (e.g. "5m", "1h").
+	// Default: "5m". Set to "0" to always revalidate.
+	MetadataTTL string `json:"metadata_ttl" yaml:"metadata_ttl"`
+
+	// MirrorAPI enables the /api/mirror endpoints for starting mirror jobs via HTTP.
+	// Disabled by default to prevent unauthenticated users from triggering downloads.
+	MirrorAPI bool `json:"mirror_api" yaml:"mirror_api"`
+
+	// Gradle configures Gradle HttpBuildCache behavior.
+	Gradle GradleConfig `json:"gradle" yaml:"gradle"`
+
+	// Health configures the /health endpoint behavior.
+	Health HealthConfig `json:"health" yaml:"health"`
 }
 
 // CooldownConfig configures version cooldown periods.
@@ -118,6 +145,57 @@ type StorageConfig struct {
 	// When exceeded, least recently used artifacts are evicted.
 	// Empty or "0" means unlimited.
 	MaxSize string `json:"max_size" yaml:"max_size"`
+
+	// DirectServe enables redirecting cached artifact downloads to presigned
+	// storage URLs (HTTP 302) instead of streaming bytes through the proxy.
+	// Only effective for backends that support URL signing (S3, Azure).
+	DirectServe bool `json:"direct_serve" yaml:"direct_serve"`
+
+	// DirectServeTTL is how long presigned URLs remain valid.
+	// Uses Go duration syntax (e.g. "5m", "1h"). Default: "15m".
+	DirectServeTTL string `json:"direct_serve_ttl" yaml:"direct_serve_ttl"`
+
+	// DirectServeBaseURL overrides the scheme and host of presigned URLs
+	// before returning them to clients. Useful when the proxy reaches
+	// storage at an internal address (e.g. 127.0.0.1 or a Docker hostname)
+	// but clients must use a public one.
+	DirectServeBaseURL string `json:"direct_serve_base_url" yaml:"direct_serve_base_url"`
+}
+
+// GradleConfig configures Gradle-specific features.
+type GradleConfig struct {
+	// BuildCache configures the /gradle HttpBuildCache endpoint.
+	BuildCache GradleBuildCacheConfig `json:"build_cache" yaml:"build_cache"`
+}
+
+// GradleBuildCacheConfig configures Gradle HttpBuildCache safeguards.
+type GradleBuildCacheConfig struct {
+	// ReadOnly disables PUT uploads and keeps cache reads (GET/HEAD) enabled.
+	ReadOnly bool `json:"read_only" yaml:"read_only"`
+
+	// MaxUploadSize caps a single PUT body size (e.g., "100MB"). Must be > 0.
+	// Default: "100MB".
+	MaxUploadSize string `json:"max_upload_size" yaml:"max_upload_size"`
+
+	// MaxAge evicts entries older than this duration (e.g., "24h", "7d").
+	// Empty or "0" disables age-based eviction.
+	MaxAge string `json:"max_age" yaml:"max_age"`
+
+	// MaxSize evicts oldest entries until total Gradle cache size is <= MaxSize.
+	// Empty or "0" disables size-based eviction.
+	MaxSize string `json:"max_size" yaml:"max_size"`
+
+	// SweepInterval controls periodic eviction frequency.
+	// Default: "10m".
+	SweepInterval string `json:"sweep_interval" yaml:"sweep_interval"`
+}
+
+// HealthConfig configures the /health endpoint.
+type HealthConfig struct {
+	// StorageProbeInterval is the minimum time between storage backend probes.
+	// Uses Go duration syntax (e.g. "30s", "1m"). Default: "30s".
+	// Set to "0" to probe on every /health request (useful for low-traffic deployments).
+	StorageProbeInterval string `json:"storage_probe_interval" yaml:"storage_probe_interval"`
 }
 
 // DatabaseConfig configures the cache database.
@@ -148,6 +226,15 @@ type UpstreamConfig struct {
 	// Default: https://registry.npmjs.org
 	NPM string `json:"npm" yaml:"npm"`
 
+	// Maven is the upstream Maven repository URL.
+	// Default: https://repo1.maven.org/maven2
+	Maven string `json:"maven" yaml:"maven"`
+
+	// GradlePluginPortal is the upstream Gradle Plugin Portal Maven URL.
+	// Used to resolve Gradle plugin marker artifacts.
+	// Default: https://plugins.gradle.org/m2
+	GradlePluginPortal string `json:"gradle_plugin_portal" yaml:"gradle_plugin_portal"`
+
 	// Cargo is the upstream cargo index URL.
 	// Default: https://index.crates.io
 	Cargo string `json:"cargo" yaml:"cargo"`
@@ -224,10 +311,29 @@ func Default() *Config {
 			Level:  "info",
 			Format: "text",
 		},
+		Ecosystem: EcosystemConfig{
+			Cargo: cargo.Config{
+				IncludeDefault: true,
+			},
+			Debian: debian.Config{
+				IncludeDefault: true,
+			},
+		},
 		Upstream: UpstreamConfig{
-			NPM:           "https://registry.npmjs.org",
+			NPM:                "https://registry.npmjs.org",
-			Cargo:         "https://index.crates.io",
+			Maven:              "https://repo1.maven.org/maven2",
-			CargoDownload: "https://static.crates.io/crates",
+			GradlePluginPortal: "https://plugins.gradle.org/m2",
+			Cargo:              "https://index.crates.io",
+			CargoDownload:      "https://static.crates.io/crates",
+		},
+		Gradle: GradleConfig{
+			BuildCache: GradleBuildCacheConfig{
+				ReadOnly:      false,
+				MaxUploadSize: defaultGradleMaxUploadSizeStr,
+				MaxAge:        "168h",
+				MaxSize:       "",
+				SweepInterval: defaultGradleSweepIntervalStr,
+			},
 		},
 	}
 }
@@ -272,6 +378,7 @@ func Load(path string) (*Config, error) {
 //   - PROXY_DATABASE_PATH
 //   - PROXY_LOG_LEVEL
 //   - PROXY_LOG_FORMAT
+//   - PROXY_HEALTH_STORAGE_PROBE_INTERVAL
 func (c *Config) LoadFromEnv() {
 	if v := os.Getenv("PROXY_LISTEN"); v != "" {
 		c.Listen = v
@@ -288,6 +395,15 @@ func (c *Config) LoadFromEnv() {
 	if v := os.Getenv("PROXY_STORAGE_MAX_SIZE"); v != "" {
 		c.Storage.MaxSize = v
 	}
+	if v := os.Getenv("PROXY_STORAGE_DIRECT_SERVE"); v != "" {
+		c.Storage.DirectServe = envBool(v)
+	}
+	if v := os.Getenv("PROXY_STORAGE_DIRECT_SERVE_TTL"); v != "" {
+		c.Storage.DirectServeTTL = v
+	}
+	if v := os.Getenv("PROXY_STORAGE_DIRECT_SERVE_BASE_URL"); v != "" {
+		c.Storage.DirectServeBaseURL = v
+	}
 	if v := os.Getenv("PROXY_DATABASE_DRIVER"); v != "" {
 		c.Database.Driver = v
 	}
@@ -303,13 +419,54 @@ func (c *Config) LoadFromEnv() {
 	if v := os.Getenv("PROXY_LOG_FORMAT"); v != "" {
 		c.Log.Format = v
 	}
+	if v := os.Getenv("PROXY_UPSTREAM_MAVEN"); v != "" {
+		c.Upstream.Maven = v
+	}
+	if v := os.Getenv("PROXY_UPSTREAM_GRADLE_PLUGIN_PORTAL"); v != "" {
+		c.Upstream.GradlePluginPortal = v
+	}
 	if v := os.Getenv("PROXY_COOLDOWN_DEFAULT"); v != "" {
 		c.Cooldown.Default = v
 	}
+	if v := os.Getenv("PROXY_CACHE_METADATA"); v != "" {
+		c.CacheMetadata = envBool(v)
+	}
+	if v := os.Getenv("PROXY_MIRROR_API"); v != "" {
+		c.MirrorAPI = envBool(v)
+	}
+	if v := os.Getenv("PROXY_METADATA_TTL"); v != "" {
+		c.MetadataTTL = v
+	}
+	if v := os.Getenv("PROXY_GRADLE_BUILD_CACHE_READ_ONLY"); v != "" {
+		c.Gradle.BuildCache.ReadOnly = v == "true" || v == "1"
+	}
+	if v := os.Getenv("PROXY_GRADLE_BUILD_CACHE_MAX_UPLOAD_SIZE"); v != "" {
+		c.Gradle.BuildCache.MaxUploadSize = v
+	}
+	if v := os.Getenv("PROXY_GRADLE_BUILD_CACHE_MAX_AGE"); v != "" {
+		c.Gradle.BuildCache.MaxAge = v
+	}
+	if v := os.Getenv("PROXY_GRADLE_BUILD_CACHE_MAX_SIZE"); v != "" {
+		c.Gradle.BuildCache.MaxSize = v
+	}
+	if v := os.Getenv("PROXY_GRADLE_BUILD_CACHE_SWEEP_INTERVAL"); v != "" {
+		c.Gradle.BuildCache.SweepInterval = v
+	}
+	if v := os.Getenv("PROXY_HEALTH_STORAGE_PROBE_INTERVAL"); v != "" {
+		c.Health.StorageProbeInterval = v
+	}
 }
 
 // Validate checks the configuration for errors.
 func (c *Config) Validate() error {
+	// finalize the configuration by injecting default routes if requested
+	if c.Ecosystem.Cargo.IncludeDefault {
+		c.Ecosystem.Cargo.Route = append(c.Ecosystem.Cargo.Route, cargo.RouteDefault)
+	}
+	if c.Ecosystem.Debian.IncludeDefault {
+		c.Ecosystem.Debian.Route = append(c.Ecosystem.Debian.Route, debian.RouteDefault)
+	}
+
 	if c.Listen == "" {
 		return fmt.Errorf("listen address is required")
 	}
@@ -355,9 +512,141 @@ func (c *Config) Validate() error {
 		}
 	}
 
+	// Validate direct serve TTL if specified
+	if c.Storage.DirectServeTTL != "" {
+		if _, err := time.ParseDuration(c.Storage.DirectServeTTL); err != nil {
+			return fmt.Errorf("invalid storage.direct_serve_ttl %q: %w", c.Storage.DirectServeTTL, err)
+		}
+	}
+
+	// Validate direct serve base URL if specified
+	if c.Storage.DirectServeBaseURL != "" {
+		u, err := url.Parse(c.Storage.DirectServeBaseURL)
+		if err != nil || u.Scheme == "" || u.Host == "" {
+			return fmt.Errorf("invalid storage.direct_serve_base_url %q: must be an absolute URL", c.Storage.DirectServeBaseURL)
+		}
+	}
+
+	// Validate metadata TTL if specified
+	if c.MetadataTTL != "" && c.MetadataTTL != "0" {
+		if _, err := time.ParseDuration(c.MetadataTTL); err != nil {
+			return fmt.Errorf("invalid metadata_ttl %q: %w", c.MetadataTTL, err)
+		}
+	}
+
+	if err := c.Ecosystem.Cargo.Validate(); err != nil {
+		return err
+	}
+	if err := c.Ecosystem.Debian.Validate(); err != nil {
+		return err
+	}
+
 	return nil
 }
 
+const (
+	defaultMetadataTTL                   = 5 * time.Minute  //nolint:mnd // sensible default
+	defaultDirectServeTTL                = 15 * time.Minute //nolint:mnd // sensible default
+	defaultGradleBuildCacheMaxUploadSize = 100 << 20
+	defaultGradleBuildCacheSweepInterval = 10 * time.Minute
+	defaultGradleMaxUploadSizeStr        = "100MB"
+	defaultGradleSweepIntervalStr        = "10m"
+)
+
+// ParseMaxSize returns the maximum cache size in bytes.
+// Returns 0 if unset or explicitly disabled (meaning unlimited).
+func (c *Config) ParseMaxSize() int64 {
+	if c.Storage.MaxSize == "" || c.Storage.MaxSize == "0" {
+		return 0
+	}
+	size, err := ParseSize(c.Storage.MaxSize)
+	if err != nil {
+		return 0
+	}
+	return size
+}
+
+// ParseMetadataTTL returns the metadata TTL duration.
+// Returns 5 minutes if unset, 0 if explicitly disabled.
+func (c *Config) ParseMetadataTTL() time.Duration {
+	if c.MetadataTTL == "" {
+		return defaultMetadataTTL
+	}
+	if c.MetadataTTL == "0" {
+		return 0
+	}
+	d, err := time.ParseDuration(c.MetadataTTL)
+	if err != nil {
+		return defaultMetadataTTL
+	}
+	return d
+}
+
+// ParseGradleBuildCacheMaxUploadSize returns the max accepted PUT body size.
+// Defaults to 100MB if unset or invalid.
+func (c *Config) ParseGradleBuildCacheMaxUploadSize() int64 {
+	if c.Gradle.BuildCache.MaxUploadSize == "" {
+		return defaultGradleBuildCacheMaxUploadSize
+	}
+	size, err := ParseSize(c.Gradle.BuildCache.MaxUploadSize)
+	if err != nil || size <= 0 {
+		return defaultGradleBuildCacheMaxUploadSize
+	}
+	return size
+}
+
+// ParseGradleBuildCacheMaxAge returns age-based eviction threshold.
+// Returns 0 when disabled or invalid.
+func (c *Config) ParseGradleBuildCacheMaxAge() time.Duration {
+	if c.Gradle.BuildCache.MaxAge == "" || c.Gradle.BuildCache.MaxAge == "0" {
+		return 0
+	}
+	d, err := time.ParseDuration(c.Gradle.BuildCache.MaxAge)
+	if err != nil || d <= 0 {
+		return 0
+	}
+	return d
+}
+
+// ParseGradleBuildCacheMaxSize returns total-size cap in bytes.
+// Returns 0 when disabled or invalid.
+func (c *Config) ParseGradleBuildCacheMaxSize() int64 {
+	if c.Gradle.BuildCache.MaxSize == "" || c.Gradle.BuildCache.MaxSize == "0" {
+		return 0
+	}
+	size, err := ParseSize(c.Gradle.BuildCache.MaxSize)
+	if err != nil || size <= 0 {
+		return 0
+	}
+	return size
+}
+
+// ParseGradleBuildCacheSweepInterval returns eviction sweep cadence.
+// Defaults to 10m if unset or invalid.
+func (c *Config) ParseGradleBuildCacheSweepInterval() time.Duration {
+	if c.Gradle.BuildCache.SweepInterval == "" {
+		return defaultGradleBuildCacheSweepInterval
+	}
+	d, err := time.ParseDuration(c.Gradle.BuildCache.SweepInterval)
+	if err != nil || d <= 0 {
+		return defaultGradleBuildCacheSweepInterval
+	}
+	return d
+}
+
+// ParseDirectServeTTL returns the presigned URL expiry duration.
+// Returns 15 minutes if unset.
+func (c *Config) ParseDirectServeTTL() time.Duration {
+	if c.Storage.DirectServeTTL == "" {
+		return defaultDirectServeTTL
+	}
+	d, err := time.ParseDuration(c.Storage.DirectServeTTL)
+	if err != nil {
+		return defaultDirectServeTTL
+	}
+	return d
+}
+
 // ParseSize parses a human-readable size string (e.g., "10GB", "500MB").
 // Returns the size in bytes.
 func ParseSize(s string) (int64, error) {
@@ -438,3 +727,7 @@ func (a *AuthConfig) Header() (name, value string) {
 func expandEnv(s string) string {
 	return os.Expand(s, os.Getenv)
 }
+
+func envBool(v string) bool {
+	return v == "true" || v == "1"
+}

internal/config/config_test.go

@@ -4,6 +4,7 @@ import (
 	"os"
 	"path/filepath"
 	"testing"
+	"time"
 )
 
 const (
@@ -24,6 +25,18 @@ func TestDefault(t *testing.T) {
 	if cfg.Database.Path == "" {
 		t.Error("Database.Path should not be empty")
 	}
+	if cfg.Gradle.BuildCache.MaxUploadSize != "100MB" {
+		t.Errorf("Gradle.BuildCache.MaxUploadSize = %q, want %q", cfg.Gradle.BuildCache.MaxUploadSize, "100MB")
+	}
+	if cfg.Gradle.BuildCache.MaxAge != "168h" {
+		t.Errorf("Gradle.BuildCache.MaxAge = %q, want %q", cfg.Gradle.BuildCache.MaxAge, "168h")
+	}
+	if cfg.Upstream.Maven != "https://repo1.maven.org/maven2" {
+		t.Errorf("Upstream.Maven = %q, want %q", cfg.Upstream.Maven, "https://repo1.maven.org/maven2")
+	}
+	if cfg.Upstream.GradlePluginPortal != "https://plugins.gradle.org/m2" {
+		t.Errorf("Upstream.GradlePluginPortal = %q, want %q", cfg.Upstream.GradlePluginPortal, "https://plugins.gradle.org/m2")
+	}
 }
 
 func TestValidate(t *testing.T) {
@@ -97,6 +110,41 @@ func TestValidate(t *testing.T) {
 			modify:  func(c *Config) { c.Storage.MaxSize = "10GB" },
 			wantErr: false,
 		},
+		{
+			name:    "invalid gradle upload size",
+			modify:  func(c *Config) { c.Gradle.BuildCache.MaxUploadSize = testInvalid },
+			wantErr: true,
+		},
+		{
+			name:    "zero gradle upload size",
+			modify:  func(c *Config) { c.Gradle.BuildCache.MaxUploadSize = "0" },
+			wantErr: true,
+		},
+		{
+			name:    "invalid gradle max age",
+			modify:  func(c *Config) { c.Gradle.BuildCache.MaxAge = testInvalid },
+			wantErr: true,
+		},
+		{
+			name:    "valid gradle max age",
+			modify:  func(c *Config) { c.Gradle.BuildCache.MaxAge = "24h" },
+			wantErr: false,
+		},
+		{
+			name:    "invalid gradle max size",
+			modify:  func(c *Config) { c.Gradle.BuildCache.MaxSize = testInvalid },
+			wantErr: true,
+		},
+		{
+			name:    "invalid gradle sweep interval",
+			modify:  func(c *Config) { c.Gradle.BuildCache.SweepInterval = "0" },
+			wantErr: true,
+		},
+		{
+			name:    "valid gradle sweep interval",
+			modify:  func(c *Config) { c.Gradle.BuildCache.SweepInterval = "30m" },
+			wantErr: false,
+		},
 	}
 
 	for _, tt := range tests {
@@ -222,6 +270,13 @@ func TestLoadFromEnv(t *testing.T) {
 	t.Setenv("PROXY_BASE_URL", "https://env.example.com")
 	t.Setenv("PROXY_STORAGE_PATH", "/env/cache")
 	t.Setenv("PROXY_LOG_LEVEL", testLevelDebug)
+	t.Setenv("PROXY_UPSTREAM_MAVEN", "https://maven.example.com/repository/maven-public")
+	t.Setenv("PROXY_UPSTREAM_GRADLE_PLUGIN_PORTAL", "https://plugins.example.com/m2")
+	t.Setenv("PROXY_GRADLE_BUILD_CACHE_READ_ONLY", "true")
+	t.Setenv("PROXY_GRADLE_BUILD_CACHE_MAX_UPLOAD_SIZE", "32MB")
+	t.Setenv("PROXY_GRADLE_BUILD_CACHE_MAX_AGE", "12h")
+	t.Setenv("PROXY_GRADLE_BUILD_CACHE_MAX_SIZE", "10GB")
+	t.Setenv("PROXY_GRADLE_BUILD_CACHE_SWEEP_INTERVAL", "15m")
 
 	cfg.LoadFromEnv()
 
@@ -237,6 +292,27 @@ func TestLoadFromEnv(t *testing.T) {
 	if cfg.Log.Level != testLevelDebug {
 		t.Errorf("Log.Level = %q, want %q", cfg.Log.Level, testLevelDebug)
 	}
+	if cfg.Upstream.Maven != "https://maven.example.com/repository/maven-public" {
+		t.Errorf("Upstream.Maven = %q, want %q", cfg.Upstream.Maven, "https://maven.example.com/repository/maven-public")
+	}
+	if cfg.Upstream.GradlePluginPortal != "https://plugins.example.com/m2" {
+		t.Errorf("Upstream.GradlePluginPortal = %q, want %q", cfg.Upstream.GradlePluginPortal, "https://plugins.example.com/m2")
+	}
+	if !cfg.Gradle.BuildCache.ReadOnly {
+		t.Error("Gradle.BuildCache.ReadOnly = false, want true")
+	}
+	if cfg.Gradle.BuildCache.MaxUploadSize != "32MB" {
+		t.Errorf("Gradle.BuildCache.MaxUploadSize = %q, want %q", cfg.Gradle.BuildCache.MaxUploadSize, "32MB")
+	}
+	if cfg.Gradle.BuildCache.MaxAge != "12h" {
+		t.Errorf("Gradle.BuildCache.MaxAge = %q, want %q", cfg.Gradle.BuildCache.MaxAge, "12h")
+	}
+	if cfg.Gradle.BuildCache.MaxSize != "10GB" {
+		t.Errorf("Gradle.BuildCache.MaxSize = %q, want %q", cfg.Gradle.BuildCache.MaxSize, "10GB")
+	}
+	if cfg.Gradle.BuildCache.SweepInterval != "15m" {
+		t.Errorf("Gradle.BuildCache.SweepInterval = %q, want %q", cfg.Gradle.BuildCache.SweepInterval, "15m")
+	}
 }
 
 func TestLoadCooldownConfig(t *testing.T) {
@@ -301,3 +377,218 @@ func TestLoadFileNotFound(t *testing.T) {
 		t.Error("expected error for nonexistent file")
 	}
 }
+
+func TestParseMaxSize(t *testing.T) {
+	tests := []struct {
+		name    string
+		maxSize string
+		want    int64
+	}{
+		{"empty means unlimited", "", 0},
+		{"zero means unlimited", "0", 0},
+		{"10GB", "10GB", 10 * 1024 * 1024 * 1024},
+		{"500MB", "500MB", 500 * 1024 * 1024},
+		{"invalid returns 0", "invalid", 0},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := Default()
+			cfg.Storage.MaxSize = tt.maxSize
+			got := cfg.ParseMaxSize()
+			if got != tt.want {
+				t.Errorf("ParseMaxSize() = %d, want %d", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestParseMetadataTTL(t *testing.T) {
+	tests := []struct {
+		name string
+		ttl  string
+		want time.Duration
+	}{
+		{"empty defaults to 5m", "", 5 * time.Minute},
+		{"explicit zero", "0", 0},
+		{"10 minutes", "10m", 10 * time.Minute},
+		{"1 hour", "1h", 1 * time.Hour},
+		{"invalid defaults to 5m", "not-a-duration", 5 * time.Minute},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := Default()
+			cfg.MetadataTTL = tt.ttl
+			got := cfg.ParseMetadataTTL()
+			if got != tt.want {
+				t.Errorf("ParseMetadataTTL() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestValidateMetadataTTL(t *testing.T) {
+	cfg := Default()
+	cfg.MetadataTTL = "invalid"
+	if err := cfg.Validate(); err == nil {
+		t.Error("expected validation error for invalid metadata_ttl")
+	}
+
+	cfg.MetadataTTL = "5m"
+	if err := cfg.Validate(); err != nil {
+		t.Errorf("unexpected error for valid metadata_ttl: %v", err)
+	}
+
+	cfg.MetadataTTL = "0"
+	if err := cfg.Validate(); err != nil {
+		t.Errorf("unexpected error for zero metadata_ttl: %v", err)
+	}
+}
+
+func TestValidateHealthStorageProbeInterval(t *testing.T) {
+	cfg := Default()
+	cfg.Health.StorageProbeInterval = "not-a-duration"
+	if err := cfg.Validate(); err == nil {
+		t.Error("expected validation error for invalid health.storage_probe_interval")
+	}
+
+	cfg.Health.StorageProbeInterval = "30s"
+	if err := cfg.Validate(); err != nil {
+		t.Errorf("unexpected error for valid health.storage_probe_interval: %v", err)
+	}
+
+	cfg.Health.StorageProbeInterval = "0"
+	if err := cfg.Validate(); err != nil {
+		t.Errorf("unexpected error for zero health.storage_probe_interval: %v", err)
+	}
+
+	cfg.Health.StorageProbeInterval = ""
+	if err := cfg.Validate(); err != nil {
+		t.Errorf("unexpected error for empty health.storage_probe_interval: %v", err)
+	}
+
+	cfg.Health.StorageProbeInterval = "-5s"
+	if err := cfg.Validate(); err == nil {
+		t.Error("expected validation error for negative health.storage_probe_interval")
+	}
+}
+
+func TestLoadMetadataTTLFromEnv(t *testing.T) {
+	cfg := Default()
+	t.Setenv("PROXY_METADATA_TTL", "10m")
+	cfg.LoadFromEnv()
+
+	if cfg.MetadataTTL != "10m" {
+		t.Errorf("MetadataTTL = %q, want %q", cfg.MetadataTTL, "10m")
+	}
+}
+
+func TestParseGradleBuildCacheConfig(t *testing.T) {
+	cfg := Default()
+
+	if got := cfg.ParseGradleBuildCacheMaxUploadSize(); got != 100*1024*1024 {
+		t.Errorf("ParseGradleBuildCacheMaxUploadSize() = %d, want %d", got, 100*1024*1024)
+	}
+	if got := cfg.ParseGradleBuildCacheMaxAge(); got != 168*time.Hour {
+		t.Errorf("ParseGradleBuildCacheMaxAge() = %v, want %v", got, 168*time.Hour)
+	}
+	if got := cfg.ParseGradleBuildCacheMaxSize(); got != 0 {
+		t.Errorf("ParseGradleBuildCacheMaxSize() = %d, want 0", got)
+	}
+	if got := cfg.ParseGradleBuildCacheSweepInterval(); got != 10*time.Minute {
+		t.Errorf("ParseGradleBuildCacheSweepInterval() = %v, want %v", got, 10*time.Minute)
+	}
+
+	cfg.Gradle.BuildCache.MaxUploadSize = "64MB"
+	cfg.Gradle.BuildCache.MaxAge = "48h"
+	cfg.Gradle.BuildCache.MaxSize = "2GB"
+	cfg.Gradle.BuildCache.SweepInterval = "20m"
+
+	if got := cfg.ParseGradleBuildCacheMaxUploadSize(); got != 64*1024*1024 {
+		t.Errorf("ParseGradleBuildCacheMaxUploadSize() = %d, want %d", got, 64*1024*1024)
+	}
+	if got := cfg.ParseGradleBuildCacheMaxAge(); got != 48*time.Hour {
+		t.Errorf("ParseGradleBuildCacheMaxAge() = %v, want %v", got, 48*time.Hour)
+	}
+	if got := cfg.ParseGradleBuildCacheMaxSize(); got != 2*1024*1024*1024 {
+		t.Errorf("ParseGradleBuildCacheMaxSize() = %d, want %d", got, 2*1024*1024*1024)
+	}
+	if got := cfg.ParseGradleBuildCacheSweepInterval(); got != 20*time.Minute {
+		t.Errorf("ParseGradleBuildCacheSweepInterval() = %v, want %v", got, 20*time.Minute)
+	}
+}
+
+func TestParseDirectServeTTL(t *testing.T) {
+	tests := []struct {
+		name string
+		ttl  string
+		want time.Duration
+	}{
+		{"empty defaults to 15m", "", 15 * time.Minute},
+		{"5 minutes", "5m", 5 * time.Minute},
+		{"1 hour", "1h", 1 * time.Hour},
+		{"invalid defaults to 15m", "not-a-duration", 15 * time.Minute},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := Default()
+			cfg.Storage.DirectServeTTL = tt.ttl
+			got := cfg.ParseDirectServeTTL()
+			if got != tt.want {
+				t.Errorf("ParseDirectServeTTL() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestValidateDirectServeTTL(t *testing.T) {
+	cfg := Default()
+	cfg.Storage.DirectServeTTL = "invalid"
+	if err := cfg.Validate(); err == nil {
+		t.Error("expected validation error for invalid storage.direct_serve_ttl")
+	}
+
+	cfg.Storage.DirectServeTTL = "5m"
+	if err := cfg.Validate(); err != nil {
+		t.Errorf("unexpected error for valid storage.direct_serve_ttl: %v", err)
+	}
+}
+
+func TestLoadDirectServeFromEnv(t *testing.T) {
+	cfg := Default()
+	t.Setenv("PROXY_STORAGE_DIRECT_SERVE", "true")
+	t.Setenv("PROXY_STORAGE_DIRECT_SERVE_TTL", "30m")
+	t.Setenv("PROXY_STORAGE_DIRECT_SERVE_BASE_URL", "https://cdn.example.com")
+	cfg.LoadFromEnv()
+
+	if !cfg.Storage.DirectServe {
+		t.Error("Storage.DirectServe should be true")
+	}
+	if cfg.Storage.DirectServeTTL != "30m" {
+		t.Errorf("Storage.DirectServeTTL = %q, want %q", cfg.Storage.DirectServeTTL, "30m")
+	}
+	if cfg.Storage.DirectServeBaseURL != "https://cdn.example.com" {
+		t.Errorf("Storage.DirectServeBaseURL = %q, want %q", cfg.Storage.DirectServeBaseURL, "https://cdn.example.com")
+	}
+}
+
+func TestValidateDirectServeBaseURL(t *testing.T) {
+	cfg := Default()
+
+	cfg.Storage.DirectServeBaseURL = "not a url"
+	if err := cfg.Validate(); err == nil {
+		t.Error("expected validation error for relative direct_serve_base_url")
+	}
+
+	cfg.Storage.DirectServeBaseURL = "://bad"
+	if err := cfg.Validate(); err == nil {
+		t.Error("expected validation error for unparseable direct_serve_base_url")
+	}
+
+	cfg.Storage.DirectServeBaseURL = "https://cdn.example.com"
+	if err := cfg.Validate(); err != nil {
+		t.Errorf("unexpected error for valid direct_serve_base_url: %v", err)
+	}
+}