Keeping dependencies secure: semver, automation and their limits
Most of an application's code comes from dependencies. How semver and automated updates keep it secure, and what to do when an update can't.
PHP
PHP runs a large part of the web, much of it for years. How PHP works in production, and how to keep its applications fast, correct and secure.
How a PHP request actually runs: PHP-FPM, OPcache and timeouts
PHP still starts every request from nothing, as it did in 1995. How nginx, PHP-FPM and OPcache work, and why they explain most PHP performance problems.
Handling money in software: why floats will eventually cost you
How the Vancouver Stock Exchange lost half its index to a rounding rule, and how to store, round and convert money correctly in any stack.