[QUESTION] READONLY requests using Async API

[psykro]

Hello,

I'm trying to use the Async API. Everything works fine, the load is balanced on my masters. My test software shows an output of 160k req/s (only GET commands)
If I set my connection to READONLY, only the 3 master instances seems to be used (doing a simple "top" shows only 3 instances working)

Here is a code extract of what i do (removed error checks):

redisClusterAsyncContext * cc = redisClusterAsyncConnect("127.0.0.1:30001", HIRCLUSTER_FLAG_NULL);
uv_loop_t * loop = (uv_loop_t *)malloc(sizeof(uv_loop_t));
uv_loop_init(loop);
redisClusterLibuvAttach(cc, loop);
redisClusterAsyncContext(cc, "READONLY");
redisClusterAsyncCommand(cc, &__cb_getKey, &priv, "GET key");

Is this the correct way to handle this ? Also what is the purpose of the second parameter of redisClusterAsyncConnect ?

Thanks

[bjosv]

hiredis-cluster does not support the READONLY part of the example.
Currently it only uses the known masters when finding out whom to send the command to, but it might be a nice feature.
I believe you would need to make sure the READONLY command is sent to all nodes, have some state and make changes to node_get_by_table().

The second argument in redisClusterAsyncConnect is legacy and its an alternative way to set configuration flags.

[psykro]

Thanks for you answer.
That's sad :(

I don't think i'll have time to work on this, would have been a great addition but load balancing on 3 Masters is already a great thing 👍