[mperham]

I'm glad antirez spoke up and clarified. I do think Redis is perfectly acceptable as a cache if you make a few config tweaks and run a second instance.

Many of the developers I work with are unfamiliar with Redis. Maybe they've heard of it and they install it to use Sidekiq and that's it. From the perspective of a newcomer, memcached is "safer" to run because it'll be memory limited automatically with literally zero config necessary. Redis does require the non-default LRU and memory tuning to be a safe cache.

It sounds like my performance concerns are primarily a thing of the past. Glad to hear it and I look forward to the threaded I/O coming after lazyfree.