SQLite is a silly place
SQLite is so fast, they compete with fopen
. For some use cases, you can use SQLite instead of a filesystem, that can be 35% faster.
Collection of insane and fun facts about SQLite - blag
Some of the interesting and insane facts I learned about SQLite

I use SQLite often as the simple almost-no-database database of choice for applications. I had no idea about any of these details, most of which impress me. Well worth a few minutes to read!