redis

Redis pub/sub message size issue

ERR.*Pub/Sub.*message.*too large|message.*exceeds.*limit

Fixes

1.Keep pub/sub messages small — send IDs/references, not full payloads
2.Compress large messages before publishing (gzip/lz4)
3.Store large data in a key and publish just the key name via pub/sub

redispubsubmessage-size

Related Errors

Redis operation on wrong data type

Redis.*WRONGTYPE Operation against a key holding the wrong kind of value

•Check key type with TYPE command before operating
•Delete and recreate key if type needs to change

Redis cluster is down

Redis.*CLUSTERDOWN.*The cluster is down

•Check cluster health: redis-cli --cluster check <host>:<port>
•Verify all master nodes have sufficient slots assigned

Redis cluster CROSSSLOT error

Redis.*ERR Error running script.*CROSSSLOT Keys in request don't hash to the same slot

•Use hash tags to force keys to same slot: {user:1}:profile, {user:1}:settings
•Split multi-key operation into per-slot operations