《5 Ways to optimize Symfony Baseline Performance》
經驗之談。是用 Symfony 時最難察覺的效能盲點，也是最難改善的地方。
We will continue our performance series with Symfony (previously on Doctrine ORM and PHP). This blog post describes some of the fundamental aspects that affect Symfony performance at the core of HttpKernel request lifecycle. These complement the Symfony Performance docs, which mentions general tips such as Bytecode Caching and Autoloader Optimizations.
https://tideways.io/profiler/blog/5-ways-to-optimize-symfony-baseline-performance