move to redis-namespace gem

[pungoyal]

Any specific reason for using redis gem? redis-namespace gives namespaces, which would be a useful add-on.

[bklang]

No specific reason. Until you mentioned it, I had not heard of redis-namespace. As I am not familiar with the gem, would you explain why we should move to it? Will it require any API change for existing users of Lemondrop? Are there any pitfalls of which we should be aware? Perhaps we could allow Lemondrop users to select their Redis backend with a config option, if you feel it is important.

[pungoyal]

The only reason I raised the request is to help users namespace their redis keys. redis gem is specifically against adding the support: redis/redis-rb#222.

A lot of popular libraries (sidekiq etc) have moved to redis-namespace for the same reason.

[bklang]

I'm not opposed to this, but I still don't know enough about API changes in redis-namespace gem to feel comfortable moving the default behavior. My preference would be to do this as a configurable backend, with the default being the current redis gem. Also, since I have no personal need for this, a pull request would be most helpful :)

[pungoyal]

There would be no API changes. redis-namespace delegates everything to the underlying redis object. Creating a pull request soon.