Error4 reports
Fix MaxConnectionsError
in Redis Python
Related Issues
Real GitHub issues where developers encountered this error:
SentinelConnectionPool permanently loses a pool slot on every master switch -> "Too many connections" foreverJul 14, 2026
Async RedisCluster: ClusterNode.execute_command leaks a pool connection on every write-side error (send_packed_command outside try/finally) -> permanent MaxConnectionsErrorJun 8, 2026
RedisCluster: Transient node failure causes thundering herd on initialize(), leading to pool exhaustion under high concurrencyMay 20, 2026
RedisClusterClient enters unrecoverable state during AWS ElastiCache upgradesFeb 1, 2026
Timeline
First reported:Feb 1, 2026
Last reported:Jul 14, 2026
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