snapshot of https://github.com/go-gitea/gitea.git (main, 2026-09-15; blobs > 131072B omitted)

.github/workflows/cache-prune.yml

@@ -0,0 +1,48 @@
+name: cache-prune
+
+# Keeps the repository's total cache size below a fixed limit, so that GitHub never
+# rejects a save for being over the allowance.
+
+on:
+  schedule:
+    - cron: "37 */6 * * *" # every six hours at :37
+  workflow_dispatch:
+  workflow_call:
+
+permissions: {}
+
+concurrency:
+  group: cache-prune
+
+jobs:
+  prune:
+    runs-on: ubuntu-latest
+    if: github.repository == 'go-gitea/gitea'
+    permissions:
+      actions: write # to delete caches
+    env:
+      GH_TOKEN: ${{ github.token }}
+      GH_REPO: ${{ github.repository }}
+    steps:
+      # Keep the newest generation per key, restores never reach the older ones.
+      - name: delete superseded caches
+        run: |
+          gh cache list --limit 1000 --json id,key,ref,createdAt |
+            jq -r 'group_by([.ref, (.key | sub("(-go[0-9.]+)?-[0-9a-f]{40,64}(-[0-9]+-[0-9]+)?$"; ""))])[]
+              | sort_by(.createdAt)[:-1][] | "\(.id) \(.key)"' |
+            while read -r id key; do
+              echo "deleting $key"
+              gh cache delete "$id" || true
+            done
+
+      # Deletes least recently used first, the order GitHub itself evicts in.
+      - name: delete caches over the size limit
+        run: |
+          caches=$(gh cache list --limit 1000 --sort last_accessed_at --order asc --json id,key,sizeInBytes)
+          size=$(jq '[.[].sizeInBytes] | add // 0' <<< "$caches")
+          echo "cache usage: $((size / 1000000)) MB"
+          while [ "$size" -gt 6000000000 ] && read -r id bytes key; do
+            echo "deleting $key"
+            gh cache delete "$id" || true
+            size=$((size - bytes))
+          done <<< "$(jq -r '.[] | "\(.id) \(.sizeInBytes) \(.key)"' <<< "$caches")"