Why does swoole have high performance?

#swoole is an extension extension running under PHP, which is actually different from ordinary extensions. Ordinary extensions just provide a library function. (Recommended learning: swoole video tutorial)

The swoole extension will take over control of PHP after running and enter the event loop. When an IO event occurs, swoole will automatically call back the specified PHP function.

PHP's asynchronous, parallel, high-performance network communication engine is written in pure C language and provides an asynchronous multi-threaded server in PHP language, asynchronous TCP/UDP network client, asynchronous MySQL, asynchronous Redis , database connection pool, AsyncTask, message queue, millisecond timer, asynchronous file reading and writing, asynchronous DNS query.

Swoole has built-in Http/WebSocket server/client and Http2.0 server.

Swoole can be widely used in the Internet, mobile communications, enterprise software, online games, Internet of Things, Internet of Vehicles, smart homes and other fields. Using PHP Swoole as a network communication framework can greatly improve the efficiency of enterprise IT R&D teams and focus more on developing innovative products.

Swoole has a built-in asynchronous non-blocking, multi-threaded network IO server at the bottom. PHP programmers only need to handle event callbacks and do not need to care about the underlying layer.

Unlike fully asynchronous frameworks such as Nginx/Tornado/Node.js, Swoole supports both fully asynchronous and synchronous.

Swoole is open source and free software, and the licensing agreement is Apache2.0. Both corporate and individual developers can use Swoole's code for free, and modifications made on Swoole can be used in commercial products without open source (note: the copyright statement of the original author must be retained).

Implementation of Swoole

Swoole is written in pure C and does not rely on other third-party libraries.

swoole does not use libevent, so there is no need to install libevent

swoole does not rely on PHP's stream/sockets/pcntl/posix/sysvmsg Waiting for expansion

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