PHP development skills: How to use Gearman scheduled tasks to process MySQL database
Introduction:
Gearman is an open source distributed task scheduling system that can be used to execute tasks in parallel and improve the processing capabilities of the system . In PHP development, we often use Gearman to handle some time-consuming tasks or asynchronous tasks. This article will introduce how to use Gearman to implement scheduled tasks to handle MySQL database operations.
1. Install Gearman
sudo apt-get install gearman-job-server sudo apt-get install php-gearman
pecl install gearman
extension=gearman.so
2. Create Gearman Worker
<?php $worker = new GearmanWorker(); $worker->addServer(); // 添加Gearman服务器信息 $worker->addFunction("mysql_query", "process_query"); // 添加Gearman任务处理函数 while ($worker->work()) { if ($worker->returnCode() != GEARMAN_SUCCESS) { echo "Worker failed: " . $worker->error() . " "; break; } } function process_query($job) { // 处理数据库操作的逻辑 $mysqli = new mysqli('localhost', 'username', 'password', 'database'); // 执行数据库操作 $result = $mysqli->query($job->workload()); $mysqli->close(); return $result; } ?>
3. Create Gearman Client
<?php $client = new GearmanClient(); $client->addServer(); // 添加Gearman服务器信息 $query = "SELECT * FROM table"; // 待处理的数据库查询语句 $client->doBackground("mysql_query", $query); // 发送Gearman任务 echo "Task sent to Gearman server. "; ?>
4. Run the program
php worker.php
php client.php
Summary:
By using Gearman scheduled tasks to process the MySQL database, we can allocate some time-consuming database operations to different Workers for parallel processing, improving the system's processing capabilities and response speed. Gearman's flexibility and extensibility make it one of the most useful tools in PHP development.
Note: In actual development, timing tasks and database operation logic need to be reasonably designed and adjusted based on specific business needs and system architecture.
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