sqlite

There are perhaps a trillion active SQLite databases in the world. Roughly half the filesystem I/O on the phone in your pocket goes through it. And it is maintained by three committers. That ratio — planetary deployment, three-person team — is the actual subject of this talk. Richard Hipp, SQLite’s creator, spends 54 minutes explaining the machinery that makes it possible, and the answer is not cleverness. It is a testing regime borrowed wholesale from the avionics industry, plus a willingness to redesign the product itself so it can be tested at all....