Double Shot #2009
- The Unofficial MySQL 8.0 Optimizer Guide - A bit out of date, but there's a lot of information here.
- The System Design Primer - Study guide for use when you're expecting system design questions in an interview.
- Zeebe - Visual microservices orchestration engine, in an open-source tech preview at the moment.
- Platform-Agnostic Security Tokens - Proposed replacement for JWT/JWS/JWE, along with a reference implementation in PHP.