Race-Condition-and-Consistency-Fixes-in-Cache-Layer

[KeNgKawthar]

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Summary

This PR improves the cache layer by addressing race conditions, strengthening consistency guarantees, and enhancing reliability under concurrent workloads. It introduces atomic cache operations, safer connection management, cache invalidation strategies, and improved testing to ensure predictable behavior across both in-memory and Redis-backed caches.

Changes Made

• Implemented atomic cache expiry checks to prevent race conditions during retrieval.
• Improved Redis connection management with connection pooling, health checks, and retry/backoff support.
• Added a cache invalidation strategy for stale entries.
• Protected shared cache metrics from concurrent updates.
• Added connection state validation before Redis cache operations.
• Introduced cache warming for frequently accessed data.
• Expanded integration tests to cover concurrent access scenarios and cache consistency.

Testing

• Added integration tests for concurrent cache access.
• Verified cache consistency across supported cache backends.
• Validated cache expiry behavior under concurrent workloads.
• Confirmed metrics remain accurate under high concurrency.
• Tested Redis connection recovery and health-check behavior.

Closes #43

[MaryammAli]

LGTM

[MaryammAli]

LGTM