- Add in-memory cache for /status endpoint with 30s TTL
- Cache keyed by view parameters to handle different query patterns
- Add cache clearing for tests to prevent interference
- Optimize get_queue_metrics to use single pipeline for all Redis calls
- Previously made 7+ separate pipeline calls
- Now combines all queue metrics into one pipeline (7n+2 operations)
- Reduces Redis round trips and improves API response time
- Update unit tests to match new pipelining behavior
- All 866 tests passing
