[star-techate]

It's an in-memory key-value store. Its primary function is to let transient processes not have to hit the disk to update state. Go ahead and write one this weekend, in that shiny new language that you're interested in, and then finish it up by adjusting the redis bindings of a popular CMS to work with your daemon as well.

[toomuchtodo]

If it's so easy, I'm sure we'll see replacements of equal quality. The initial Redis release was in 2009. I would think it's unlikely you're going to reach the same feature and stability parity orders of magnitude faster that Redis did.

[star-techate]

Certainly, it'll be a lot easier if you pick your redis-user in advance and look what its actual requirements are, so that you can focus on a solid implementation of those features.