How Swoole Blows Up Your Mind

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How Swoole Blows Up Your Mind? @PHPCon Okinawa 2019 By Albert Chen

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About Me • Albert Chen • Software Architect • M17 HandsUp • Open Source Maintainer

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What is Swoole?

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What is Swoole? • A C extension for PHP • An asynchronous network engine for PHP • Features: • Event-driven non-blocking I/O • HTTP / HTTP2 / Websocket / TCP / UDP • Coroutine (CSP Model) • High performance for high concurrency

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Why PHP Performs Poorly in High Concurrency?

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Lifecycle in PHP

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Lifecycle in PHP PHP  Files Tokenizing Semantic Parsing AST Generate Bytecode Execute Bytecode Output Load Bytecode From Memory Check Bytecode Cache

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Blocking I/O in PHP Request Request Request Request PHP FPM FPM Pool FPM Pool Worker Worker Worker Worker Blocking I/O

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Eventloop in NodeJS

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There’s no Eventloop in Traditional PHP

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Let’s See What Changes in Swoole?

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Structure in Swoole Server

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Structure in Swoole Server • Code Is Persistent in Memory • Swoole Takes Lifecycle Over PHP • Reduce Initialization Steps • Reduce Response Latency • Event-driven Non-blocking I/O for Requests

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Benchmark Comparison of Go with Swoole

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Server Benchmark in Go

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Server Benchmark in Go

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Server Benchmark in Swoole

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Server Benchmark in Swoole

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This Doesn’t Mean PHP with Swoole is Faster Than Go (Of Course Not)

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Coroutine in Swoole

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Coroutine in Swoole • Blocking I/Os Are Scheduled By Coroutine Automatically.

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