What is the current status of the connector?

[gregkare]

Hi, thanks for working on this.

Does "Redis Cluster support." under TODO in the README mean that it cannot be used to do queries yet? There's no example in the README.

Thanks in advance

[pintsized]

Hi,

The connector is used in production in several places, so current status is that you can definitely rely upon it, and its ongoing maintenance. I left a space for eventually having Redis Cluster support, but for this to work we need a Redis client which supports cluster (or potentially a separate module which composes the Redis client in some way). See here: openresty/lua-resty-redis#43

[gregkare]

I think I'm missing something. Does that mean that connecting to sentinel (as in the README) currently is not supported because the lua-resty-redis library doesn't have cluster support?

[pintsized]

No, it means you need to understand the difference between Sentinel and Cluster better :)

http://redis.io/topics/sentinel
http://redis.io/topics/cluster-tutorial

Sentinel works just fine, and is proven in production. Cluster is a newer thing for Redis (although uses and is related to Sentinel), and requires quite a bit of effort on the part of the client, so all Redis clients will have to implement that logic in some way. The lua-resty-redis client has not yet gained this functionality officially, although some people have had a crack at it I believe.

When lua-resty-redis (or another module) can utilise Redis Cluster, then I'll add support for it to the lua-resty-redis-connector, who's job is merely to make connection logic reliable and repeatable.

[gregkare]

Thanks, for the clarification! I was under the impression that "cluster" and "sentinel" were the same thing

[gregkare]

I forgot to close this