Most used open source key value stores and databases (themythicalengineer.com)

This is such a lazy article. Someone has just pulled data from GitHub and done basically nothing to else.

Quantity is not a valuable metric.

You need to look at perf./watt and complexity of use instead.

Something like this can replace 90% of databases: http://root.rupy.se

When the whole database is 2000 lines of code you don't need a manual?