A comprehensive guide to optimizing Symfony application performance across multiple layers. Covers PHP 8.4/8.5 runtime upgrades and JIT benefits, OPcache and preloading configuration for production, service container tuning with lazy objects, routing optimization via static prefixing, Doctrine ORM pitfalls (N+1 queries, bidirectional One-to-One relations, hydration strategies), Symfony Messenger payload compression, and new Symfony 8 components like JsonStreamer and ObjectMapper. Also includes profiling tooling recommendations (Blackfire, Tideways) and a CTO-level audit checklist covering FrankenPHP/RoadRunner as PHP-FPM alternatives.
Table of contents
The Foundation of the Modern PHP RuntimeArchitectural Efficiency in the Framework KernelThe Data Layer: Doctrine ORM and Database DisciplineScalability and Asynchronous Task ManagementLeveraging Modern Symfony 8 ComponentsProfiling and the Measurement WorkflowEngineering Management and CTO StrategyConclusionSort: