Table of Contents RoadRunner is an open-source (MIT licensed), high-performance PHP application server, load balancer, and process manager. Introduction What is it? Features Installation Configuration LICENSE PHP Workers Worker Environment Developer Mode Error Handling Restarting Embedded Monitoring RPC to App Server Caveats Debugging App Server CLI Commands Production Usage Writing a RR systemd unit file Auto-Reloading Prometheus Metrics Healthcheck Building a Server RPC Write a Service Overriding HTTP error codes HTTPs and HTTP/2 HTTPs and HTTP/2 Headers Middleware Integrations CakePHP Laravel Slim Spiral Framework Symfony Framework Symlex Framework Ubiquity Framework Zend Expressive Yii2 and Yii3 Phalcon3 and Phalcon4 All Composer Libraries Docker Ports and Containers Available Images As Library Event Listeners Standalone Usage AWS Lambda