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subscribe to redis cluster #2846
Description
I deployed redis cluster with following command
helm install my-release oci://registry-1.docker.io/bitnamicharts/redis-cluster
helm created 6 nodes: 3 masters and 3 slaves
I activated notifications on EACH pod
D:\src\red>kubectl exec -ti my-red-redis-cluster-1 -- /bin/bash
I have no name!@my-red-redis-cluster-1:/$ redis-cli config set notify-keyspace-events AKEnm
OK
Then I try to subscribe to key updates. For each i in 0..5 I did
var redis = await ConnectionMultiplexer.ConnectAsync(
$"my-red-redis-cluster-{i}.my-red-redis-cluster-headless.default.svc.cluster.local:6379,password={password}");
var sub = redis.GetSubscriber();
var channel = new RedisChannel("__key*@*__:*", RedisChannel.PatternMode.Pattern);
await sub.SubscribeAsync(channel, Accept);
Console.WriteLine($"Subscribed to channel {i} - {sub.SubscribedEndpoint(channel)}");I see it connects to the same server for any "i" value
Subscribed to channel 4 - 10.1.37.157:6379
Subscribed to channel 0 - 10.1.37.157:6379
Subscribed to channel 2 - 10.1.37.157:6379
Subscribed to channel 3 - 10.1.37.157:6379
Subscribed to channel 5 - 10.1.37.157:6379
Subscribed to channel 1 - 10.1.37.157:6379
And then I receive only ~ 33% of notifications.
if I subscribe using redis-cli on each server - I receive all notifications too.
What should I do to receive all notifications in C# program?
Reacted by Kyle Larson
Activity
mgravell commentedon Feb 4, 2025
mgravell commentedon Jul 22, 2026
Implemented in StackExchange.Redis 2.11.0 (#2995): full cluster keyspace/keyevent delivery via
RedisChannelOptions.MultiNode+RedisChannel.KeySpace/KeyEvent(see docs/KeyspaceNotifications.md). Same feature as #2750. Closing as completed.Note: requires the new multi-node channel API rather than a raw
__key*@*__:*pattern subscribe.