Read directly from a replica inside Redis cluster

Question

I want to read directly from a replica inside a Redis cluster but I am getting redirected even if the key actually exist inside the Redis node.

Checked READONLY command docs. However, that is seemed to be ignored in case of Redis Cluster.

How should I configure the Redis cluster so that I can directly read from a replica node for the reads issue against its hash slots? I am OK to read stale data in this case.

You need to issue the `READONLY` command in same connection to the replica, before the get request. Have you tried that? — Itamar Haber, Mar 10 '19 at 17:27
@ItamarHaber oh, nice! that actually worked, thanks a lot! Please put it as an answer and I will accept it! — tugberk, Mar 10 '19 at 23:27

score 3 · Accepted Answer · answered Mar 11 '19 at 10:55

The READONLY command (as well as the READWRITE command that counteracts it) are applicable per connection in a clustered environment.

While READWRITE is the default behavior, in order to change that you'll need to call READONLY in the context of the connection that you're using.

Read directly from a replica inside Redis cluster

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