... based on an opaque "popularity" metric [1] which reminds me of TIOBE (which is also nonsense).
Some of the "databases" included in this ranking are pretty questionable, too. Notably, it includes a number of hosted database services and analytics platforms, like Splunk, Microsoft Azure SQL, and Algolia, which aren't really comparable to database server applications. There's also a couple of WTFs, like etcd and memcached, which are only databases by the most stretched of definitions.
Some of the "databases" included in this ranking are pretty questionable, too. Notably, it includes a number of hosted database services and analytics platforms, like Splunk, Microsoft Azure SQL, and Algolia, which aren't really comparable to database server applications. There's also a couple of WTFs, like etcd and memcached, which are only databases by the most stretched of definitions.
[1]: https://db-engines.com/en/ranking_definition