- Prefix memoryCache keys with namespace to prevent cross-account false
positives when different accounts receive the same message_id
- Add inflight tracking map to prevent TOCTOU race where concurrent
async calls for the same message both pass the check and both proceed
- Remove expired-entry deletion from has() to avoid silent cache/disk
divergence; actual cleanup happens probabilistically inside record()
- Add time-based cache invalidation (30s) to DedupStore.load() so
external writes are eventually picked up
- Refresh cacheLoadedAt after flush() so we don't immediately re-read
data we just wrote
Co-authored-by: Cursor <cursoragent@cursor.com>
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