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HomePHP FrameworkSwooleSwoole integration with Memcached: speeding up web applications
Swoole integration with Memcached: speeding up web applicationsJun 13, 2023 am 11:37 AM
memcachedaccelerateswoole

With the increasing complexity and load of web applications, how to improve the performance of web applications has become a huge challenge for every web developer. In traditional web development, Memcached is one of the popular caching technologies that can greatly improve the response time of web applications. Swoole is a recently emerged asynchronous network programming framework that can convert PHP web applications into an asynchronous event-driven approach, thereby further improving the performance of web applications. This article will introduce how to integrate Swoole and Memcached to accelerate web applications.

  1. What are Swoole and Memcached

Before introducing how to integrate Swoole and Memcached, we need to understand what they are.

Swoole is an event-driven asynchronous network communication framework. It was originally designed to solve the problem of low performance of PHP under high concurrency and high load conditions. Swoole uses a multi-process and multi-thread approach to make full use of the performance of multi-core CPUs. It also supports asynchronous MySQL and Redis clients, which allows PHP applications to not block the main process when performing IO operations, thereby improving web applications. performance.

Memcached is a memory-based caching technology mainly used to speed up the response time of web applications. Memcached stores data in memory and is faster to read and write than a database. Memcached also supports a distributed architecture, which can store data on multiple servers to improve cache hit rate and reliability.

  1. Integration of Swoole and Memcached

Swoole supports multi-threading and multi-process, which allows it to handle multiple HTTP requests at the same time. If we use Memcached as a cache server, then we can use Swoole's asynchronous IO feature to realize that after sending the request to the Memcached server, the main process can continue to perform other tasks without waiting for the response of the Memcached server.

We can use Swoole to integrate with Memcached in the following ways:

2.1 Install and configure the Memcached server

First, we need to install and configure the Memcached server. Memcached can be installed on the Ubuntu system through the following command:

sudo apt-get update
sudo apt-get install memcached

After the installation is complete, we need to configure the Memcached server, which can be achieved by editing the /etc/memcached.conf file. In this file, you can set parameters such as the listening port, cache size, and the amount of available memory. After the setup is complete, start the Memcached server with the following command:

sudo service memcached start

2.2 Install the Swoole extension

Before using Swoole to integrate with Memcached, we need to install the Swoole extension first. The Swoole extension can be installed on the Ubuntu system through the following command:

sudo pecl install swoole

After the installation is complete, the Swoole extension needs to be enabled in the php.ini configuration file.

2.3 Write PHP code

Next, we need to write PHP code to integrate Swoole with Memcached. In this example, we use Swoole's HTTP server to handle all requests and Memcached as the caching server.

<?php
$http = new swoole_http_server("0.0.0.0", 9501);

$http->on('request', function ($request, $response) {
    $memcached = new Memcached();
    $memcached->addServer("127.0.0.1", 11211);
    $key = md5($request->server['request_uri']);

    $result = $memcached->get($key);
    if ($result !== false) {
        $response->end($result);
    } else {
        $result = file_get_contents("http://example.com");
        $memcached->set($key, $result, 300); // 缓存300秒
        $response->end($result);
    }
});

$http->start();

In this example, when an HTTP request is received, it first attempts to find the cached result of the request from the Memcached server. If the cache hits, the result is returned directly. If the cache misses, the example.com website is re-requested and the result is stored in the Memcached server.

To sum up, using Swoole to integrate with Memcached can greatly improve the performance of web applications. By utilizing Swoole's asynchronous IO features and Memcached's caching technology, PHP applications can respond to user requests faster under high concurrency and high load conditions.

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