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Phase 9: two-phase garbage collection engine

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GC engine (internal/gc/): Collector.Run() implements the two-phase
algorithm — Phase 1 finds unreferenced blobs and deletes DB rows in
a single transaction, Phase 2 deletes blob files from storage.
Registry-wide mutex blocks concurrent GC runs. Collector.Reconcile()
scans filesystem for orphaned files with no DB row (crash recovery).

Wired into admin_gc.go: POST /v1/gc now launches the real collector
in a goroutine with gc_started/gc_completed audit events.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kyle Isom
2026-03-19 20:27:17 -07:00
parent c01e7ffa30
commit 562b69e875
9 changed files with 727 additions and 9 deletions
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PROJECT_PLAN.md
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@@ -18,7 +18,7 @@ design specification.
| 6 | OCI API — push path | **Complete** |
| 7 | OCI API — delete path | **Complete** |
| 8 | Admin REST API | **Complete** |
| 9 | Garbage collection | Not started |
| 9 | Garbage collection | **Complete** |
| 10 | gRPC admin API | Not started |
| 11 | CLI tool (mcrctl) | Not started |
| 12 | Web UI | Not started |