Scaling PHP Applications (2014)
App Server: Horizontal Scaling with Nginx and PHP-FPM
Database Server: Ultimate MySQL Tuning Guide
Worker Server: Asynchronous Resque Workers
Case Study: Horizontally scaling user uploads
Case Study: How DNS took down Twitpic down for 4 hours
Case Study: Scaling MySQL Vertically (10 to 3 MySQL Servers w/ SSDs)
Case Study: Hot MySQL Backups w/ Percona
Case Study: Async APIs w/ Kestrel saved my butt
Case Study: The missing guide to Memcached
Case Study: HTTP Caching and the Nginx Fastcgi Cache
Case Study: CakePHP Framework Caching
Case Study: Optimizing image handling in PHP
Case Study: Benchmarking and Load Testing Web Services