Query: How to ensure one message goes to one worker about hermes

[tomaj]

Hi

About redis driver. This driver in hermes library (RedisSetDriver) is implemented to use redis set as storage key type (https://redis.io/commands#set). This will ensure that one message will be delivered only to one worker - worker send command spop to redis and redis deliver one message from set and discard this message, so no other worker will get it.

I am also using this driver in distributed environments and it performs very well.

There is only one issue with redis - right now with RedisSetDriver your not able to process different type of Messages with different workers. This is possible only with create 2 dispatchers/emitters and use different keys in redis for each set.

Hope this will help you. If you need more information or some help please let me know.

Regards
tomaj

[geoff-ellison]

Hi @tomaj,

Thanks very much for your reply, that covers my situation.

There is only one issue with redis - right now with RedisSetDriver your not able to process different type of Messages with different workers. This is possible only with create 2 dispatchers/emitters and use different keys in redis for each set.

This isn't a problem, I'll keep to one message type and put logic in the workers to decide (based on parameters in the payload) if they need to do some different handling.

Cheers

Geoff.