Interesting article. When I implemented a no-sql database using the sqlite backend for https://github.com/rochus-keller/DoorScope https://github.com/rochus-kell

Interesting article. When I implemented a no-sql database using the sqlite backend for https://github.com/rochus-keller/DoorScope https://github.com/rochus-keller/DoorScope and https://github.com/rochus-keller/CrossLine https://github.com/rochus-keller/CrossLine 15 years ago there was little literature about it (actually also the referenced article is rather light on the pages and b-tree implementation, but e.g. section 9 of https://www.amazon.com/Definitive-Guide-SQLite-Experts-Source/dp/1430232250 https://www.amazon.com/Definitive-Guide-SQLite-Experts-Sourc... was helpful). There was no lmdb or leveldb yet; though there was bekreley db and I did prototypes with it, but the sqlite backend turned out to be much leaner and faster for the task at hand.