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About RoadRunner

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RoadRunner is an open source (MIT licensed), high-performance PHP application server, load balancer and process manager. It supports running as a service with the ability to extend its functionality on a per-project basis. RoadRunner includes PSR-7 compatible HTTP server.


  • production ready
  • PSR-7 HTTP server (file uploads, error handling, static files, hot reload, middlewares, event listeners)
  • extendable service model (plus PHP compatible RPC server)
  • flexible ENV configuration
  • no external PHP dependencies, drop-in (based on Goridge)
  • load balancer, process manager and task pipeline
  • frontend agnostic (queue, REST, PSR-7, async php, etc)
  • works over TCP, unix sockets and standard pipes
  • automatic worker replacement and safe PHP process destruction
  • worker lifecycle management (create/allocate/destroy timeouts)
  • payload context and body
  • control over max jobs per worker
  • protocol, worker and job level error management (including PHP errors)
  • memory leak failswitch
  • very fast (~250k rpc calls per second on Ryzen 1700X using 16 threads)
  • works on Windows


The MIT License (MIT). Please see LICENSE for more information. By SpiralScout.