Why Symfony 4 is faster

A brief look at some of the changes that make Symfony 4 faster than 3.x

Transcript

1. Why Symfony 4 is faster Tom Corrigan Dev Manager @ EstimateOne
2. Throw the baby out with the bathwater Step 1: delete all the things. The default installation of symfony 4 doesn’t include Doctrine, Twig, Swiftmailer, translations, validation or even sessions! It won’t be quite so fast or lightweight once you add all of that back.
3. Thankyou
4. Questions?
5. Dependency Injection Container • require_once > autoloading (#24872) • Private services ◦ Removal of unused services ◦ Inline trivial private services (#23674) • Generate one file per service factory (#23678) • Inline references to class constants (#25474)
6. Router • Optimise the matcher and avoid function calls (#21755) • Optimise grouping of similar routes (#21926) • Check the uniqueness of routes only once (#24556) Most routing optimisations are only noticeable for applications with a large number of routes (>500)
7. Micro Optimisations • Namespace functions (#24866) • Lazy load twig dependencies (#24863)
8. Further Reading My slides with links to the PRs will be available Fabien’s blog post: http://fabien.potencier.org/symfony4-performance.html
9. Questions?