Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Is it appropriate to ask questions about things like Redis (a data-structure server)?
Sure, so long as they are expert level (or at least, not beginner stuff, please).
The premise of this site is that it is for professionals -- or people who want to be professionals -- who are very experienced with databases.
Yes. No-SQL databases are encouraged here. The intent of the site is for all non-filesystem data storage analysis, more or less. If it's memcachedb or Oracle 11G, we want to talk about it here.
We only ask that you keep things objective, of course.