Cluster client support for redis transactions

[kamkash]

node-redis experts,

Does node-redis cluster client support Redis transactions?

by redis transactions I mean support for redis commands MULTI/EXEC and WATCH across cluster nodes/shards

[leibale]

Redis (the server) does not support cross-slot commands in the same transaction (even if the slots are currently in the same shard/node). If you want to make sure that a couple of keys are in the same slot, you can use "hash tags"

// this will throw `CROSSSLOT` error
cluster.multi()
  .set('11')
  .set('12')
  .exec();

// this will work
cluster.multi()
  .set('{1}1')
  .set('{1}2')
  .exec();

[kamkash]

Excellent thank you for the quick answer.

I asked because the Python Redis Cluster client Redis.py does not support MULTI even with "hash tags" (as far as I know).
I think the cluster client supports fetching a specific master node client and executing transactions on the specific node.
I was trying to understand if this is an issue with the client or if there is a bigger issue with Redis (the server).

[chayim]

redis-py supports pipelining with hashes. You can find the full coverage layout here - which shows those items overriden.

[kamkash]

@chayim

Thanks for the info

I know redis.py cluster supports pipelining.
I am trying to understand support for transactions and Pipelining in a cluster: MULTI/EXEC/WATCH and PIPELINE

I ran into this RedisCluster exception using pipeline with transaction: here

Do you know if Redis MULTI/EXEC command is supported in redis.py Clusters?