https://www.foundationdb.org/blog/foundationdb-is-open-source/
https://news.ycombinator.com/item?id=16877395
blog-post-foundationdb#core-not-possible-in-layersThe vision of FoundationDB is to start with a simple, powerful core and extend it through the addition of "layers". The key-value store, which is open sourced today, is the core, focused on incorporating only features that aren't possible to write in layers blog-post-foundationdb#core-not-possible-in-layers
Comments in hacker news references blog-post-how-foundationdb-powers-metadata-db and talk-testing-distributed-systems-with-simulations