On-disk Redis alternatives - anyone tried?

[sadaszewski]

These projects look really solid - they are drop-in replacements for Redis and should offer the most closely matched performance without the need to keep everything in RAM:

https://github.com/ideawu/ssdb
https://github.com/ledisdb/ledisdb
https://github.com/Tencent/Tendis
https://github.com/KvrocksLabs/kvrocks

Has anyone tried?