github doobidoo/mcp-memory-service v10.57.3
v10.57.3 — feat(milvus): last_accessed tracking via _access side-collection

4 hours ago

What's New

feat(milvus): last_accessed tracking via _access side-collection (PR #925, @henry201605)

Implements proper access-time tracking for the Milvus backend using a lightweight side-collection pattern.

What this fixes:

  • Forgetting engine access_boost — was always falling back to updated_at because no access timestamps existed; now correctly reads from _access collection
  • count_all_memories(stale_days=N)stale_days filter was silently ignored on Milvus; now properly excludes recently-accessed memories
  • memory_quality(action="maintain") stale detection — stale classification now uses actual last-access time

Implementation details:

  • A {collection_name}_access side-collection stores retrieve-hit timestamps
  • _touch_access() is fire-and-forget via asyncio.create_task (non-blocking — zero latency impact on retrieval)
  • Graceful degradation if the _access collection is unavailable (existing behavior preserved)

Closes #923.


Full Changelog

See CHANGELOG.md for the complete entry.

Special Thanks

Thank you to @henry201605 for the continued Milvus backend improvements across multiple releases.

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