chiguyong 6b90fb5cd6 refactor: unify Redis connection pool across all modules ... - Create app/core/redis.py with global get_redis() singleton - Replace 4 independent Redis connections: - cache.py: use get_redis() instead of own aioredis.from_url - dispatcher.py: use get_redis() instead of own connection - health_checker.py: use get_redis() instead of per-check connection - rate_limit.py: RedisRateLimitBackend uses get_redis() instead of own connection - Replace main.py readiness endpoint to use get_redis() - Add close_redis() in FastAPI lifespan shutdown - Remove unused aioredis imports from health_checker.py and main.py		2026-06-04 14:21:14 +08:00
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redis.py	refactor: unify Redis connection pool across all modules	2026-06-04 14:21:14 +08:00