Goodbye Docker: Purging is Such Sweet Sorrow
tl;dr: Docker daemon was using 100% CPU on multiple cores, prompting the author to ask why does Docker need a Daemon at all. He runs through several substitutes and differences between them.
featured in #149
Farewell To fsync(): 10× Faster Database Tests With Docker
tl;dr: When running tests you don't care about writing to your database. Using Docker to create a DB instance and disabling fsync(), you are able to run tests 10x faster.
featured in #132