This bead verified that the Redis-backed TaskStore implementation is
complete, covering all 14 tables from plan §4 plus the extra keys from
plan §4 footnotes.
Key findings:
- All 14 tables mapped to Redis keyspace correctly
- Secondary `_index` sets for O(cardinality) list queries
- Leader lease with SET NX/EX for acquire, SET XX/EX for renewal
- EXPIRE for TTL-based garbage collection (sessions, idempotency)
- Pipelining for atomic multi-key operations
- CDC overflow buffer with LPUSH + LTRIM
- Pub/Sub for admin session revocation
- Rate limiting with exponential backoff for admin login
- Search UI scoped key coordination
Acceptance criteria verified:
- test_redis_lease_race: concurrent lease acquisition
- test_redis_memory_budget: 10k tasks + 1k sessions + 100k idempotency keys
- test_redis_pubsub_session_invalidation: logout via Pub/Sub within 100ms
- testcontainers integration tests in p3_redis_integration.rs
No code changes required - the implementation was already complete.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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