Some comments to a time series benchmark comparing Tokyo Cabinet, MongoDB and Redis published ☞ here. Main point: Redis sorts at insertion time and that may slow down inserts, but depending on the ratio of writes vs reads presorting will most probably be a good think.
This blog is called myNoSQL and it is written by me, Alex Popescu, a software architect with a passion for open source and communities. It records my readings, learnings, and opinions on NoSQL databases, polyglot persistence, and distributed systems -- subjects that I'm passionate about. The opinions expressed here are my own, and no other party necessarily agrees with them. If you feel I'm biased, I probably am.