How it works

  1. Swoole
  2. How it works

Swoole is different from the traditional PHP model, it is running in CLI mode.

How Swoole works

Swoole internal

The differences between Swoole with PHP-FPM the traditional PHP model are:

  • Swoole uses Non-blocking I/O mode with epoll or kqueue
  • Swoole forks several worker processes based on CPU core number to utilise all CPU cores.
  • Swoole supports Long-live connections for WebSocket server or TCP/UDP server.
  • Swoole supports more server-side protocols: TCP/UDP/HTTP/HTTP2/WebSocket
  • Swoole preload PHP files into memory.
  • Swoole can manage and reuse the status in memory with Swoole Memory Management Modules.
  • Coroutine based concurrency compare with waterfall in PHP-FPM.

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