I was recently hit by a service running Redis exceeding RAM for the first time. I looked around and found two compatible alternatives: https://github.com/mpal

I was recently hit by a service running Redis exceeding RAM for the first time. I looked around and found two compatible alternatives: https://github.com/mpalmer/redis/tree/nds-2.6 https://github.com/mpalmer/redis/tree/nds-2.6 https://github.com/ideawu/ssdb https://github.com/ideawu/ssdb Beyond that I realized I only used get/set in my applications so I used a perl module that understands the Redis protocol and wrapped it up as a network service: https://github.com/skx/predis https://github.com/skx/predis In terms of speed, writing the data to a local SQLite instance, it averages 3-4 times slower than native redis. I'm happy enough with that, although obviously I'm sure that some other projects wouldn't be. I realize this doesn't directly address your main questions but as it is still fresh in my mind I hope it was slightly useful.