A query answering in 20 ms locally and timing out on four million rows. An anonymised data subset that keeps the query plan honest, and the mail, cron…
Three developers, three PHP patch versions and a bug that existed on one of them. A Vagrantfile, a playbook for everything inside it, and what the rebuild costs.
Three developers on three laptops running three PHP builds against three MySQL versions produce bugs that only reproduce for one of them, and a production server that resembles…
512 MB, 150 concurrent visitors, and a box that swaps before the CPU is busy. Replacing Apache and mod_php with nginx and PHP-FPM, in three stages that each…