Every call to get_redis_connection() spawned a new pool, so workers slowly accumulated thousands of open sockets. Even though connections were eventually released, skewed release timing still pushed us past Redis’ max-clients and the cluster egress IP cap.
A module-level _CONNECTION_CACHE now memoises pools by (redis_url, sentinel_hosts, async_mode, decode_responses).
Result: flat connection count, no more IP or FD exhaustion. Public API unchanged.
Signed-off-by: Sihyeon Jang <sihyeon.jang@navercorp.com>
- Implement SentinelRedisProxy class with automatic master discovery
- Add retry logic for handling connection failures and read-only errors
- Support both async and sync Redis operations with Sentinel
- Ensure backward compatibility with existing Redis configurations
- Provide seamless failover during master node outages
This enhancement significantly improves system reliability by eliminating
single points of failure in Redis deployments and ensuring continuous
service availability during infrastructure issues.
Signed-off-by: Sihyeon Jang <sihyeon.jang@navercorp.com>
Sihyeon Jang
Timothy Jaeryang Baek
Jan Kessler