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4bc183618c
* all: Refactor tests for idiomatic Go and minor improvements
Replaced redundant 'for key, _' with 'for key' in map iterations for clarity in doctests/cmds_hash_test.go. Updated time measurement from time.Now().Sub to time.Since in hset_benchmark_test.go for idiomatic Go usage. Simplified variadic argument types from interface{} to any and removed unused min function in maintnotifications/e2e/utils_test.go.
* maintnotifications/e2e/utils_test: Update variadic args type in printLog function
Changed the variadic argument type in printLog from 'any' to 'interface{}' for compatibility and consistency with standard Go practices.
Maintenance Notifications
Seamless Redis connection handoffs during cluster maintenance operations without dropping connections.
⚠️ Important Note
Maintenance notifications are currently supported only in standalone Redis clients. Cluster clients (ClusterClient, FailoverClient, etc.) do not yet support this functionality.
Quick Start
client := redis.NewClient(&redis.Options{
Addr: "localhost:6379",
Protocol: 3, // RESP3 required
MaintNotificationsConfig: &maintnotifications.Config{
Mode: maintnotifications.ModeEnabled,
},
})
Modes
ModeDisabled- Maintenance notifications disabledModeEnabled- Forcefully enabled (fails if server doesn't support)ModeAuto- Auto-detect server support (default)
Configuration
&maintnotifications.Config{
Mode: maintnotifications.ModeAuto,
EndpointType: maintnotifications.EndpointTypeAuto,
RelaxedTimeout: 10 * time.Second,
HandoffTimeout: 15 * time.Second,
MaxHandoffRetries: 3,
MaxWorkers: 0, // Auto-calculated
HandoffQueueSize: 0, // Auto-calculated
PostHandoffRelaxedDuration: 0, // 2 * RelaxedTimeout
}
Endpoint Types
EndpointTypeAuto- Auto-detect based on connection (default)EndpointTypeInternalIP- Internal IP addressEndpointTypeInternalFQDN- Internal FQDNEndpointTypeExternalIP- External IP addressEndpointTypeExternalFQDN- External FQDNEndpointTypeNone- No endpoint (reconnect with current config)
Auto-Scaling
Workers: min(PoolSize/2, max(10, PoolSize/3)) when auto-calculated
Queue: max(20×Workers, PoolSize) capped by MaxActiveConns+1 or 5×PoolSize
Examples:
- Pool 100: 33 workers, 660 queue (capped at 500)
- Pool 100 + MaxActiveConns 150: 33 workers, 151 queue
How It Works
- Redis sends push notifications about cluster maintenance operations
- Client creates new connections to updated endpoints
- Active operations transfer to new connections
- Old connections close gracefully