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Series
A practical series explaining how PHP applications work behind the scenes, focusing on PHP-FPM, performance, and production behavior.
PHP is one of the most popular backend languages in the world. Yet, many developers use it daily without fully understanding how their code actually runs in production. Recently, I was asked a simple question: what is PHP-FPM? I realized that this co...
In the previous article, we established an important idea: PHP does not run by itself. Before your framework, before your controllers, there is a runtime layer responsible for executing PHP code in production. That layer is PHP-FPM. Now it’s time to ...
Understanding how PHP-FPM works is only half of the equation.The other half is understanding how configuration choices directly shape system behavior. PHP-FPM does not auto-scale intelligently.Its performance characteristics are defined upfront. Pro...
Not all performance problems announce themselves clearly. PHP-FPM failures are rarely dramatic.They are subtle, progressive, and easy to misdiagnose. The illusion of “slow code” A common scenario: Endpoints respond slowly CPU is not maxed out No ...