php-fpm performance optimization tips sharing

PHP-FPM performance optimization skills sharing

Introduction:
With the rapid development of the Internet, PHP, as a popular scripting language, is widely used in various websites and applications. However, since PHP is an interpreted language, its execution efficiency is low, which may cause server performance to decrease. In order to improve the performance of PHP applications, especially in high-concurrency environments, we need to carry out some performance optimization measures for PHP-FPM. This article will share some PHP-FPM performance optimization techniques, including code examples, to help developers better improve the execution efficiency of PHP applications.

1. Adjust the PHP-FPM configuration file

Adjusting the PHP-FPM configuration file can improve its ability to handle requests. The following are some common configuration adjustments:

1. Adjust the process pool size:
   In the PHP-FPM configuration file, you can set the size of the process pool, that is, the number of requests that can be processed simultaneously . It can be adjusted according to the actual server configuration and load conditions. The following is an example:

   pm = dynamic
   pm.max_children = 50
   pm.start_servers = 10
   pm.min_spare_servers = 5
   pm.max_spare_servers = 20

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   Where, pm.max_children represents the maximum number of processes in the process pool, pm.start_servers represents the number of processes at startup, and pm.min_spare_servers represents that when the number of idle processes is lower than this value, it will be started For new processes, pm.max_spare_servers indicates that the process will be stopped when the number of idle processes exceeds this value.

2. Adjust the request timeout:
   The request timeout can be set in the PHP-FPM configuration file. Appropriate adjustments can be made according to actual business needs. The following is an example:

   request_terminate_timeout = 30s

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   Among them, request_terminate_timeout represents the request timeout, in seconds.

3. Turn on slow logging:
   Turning on slow logging can help us analyze which requests take longer to execute, thereby optimizing application performance. The path and threshold of slow logging can be set in the configuration file of PHP-FPM. The following is an example:

   slowlog = /var/log/php-fpm/slow.log
   request_slowlog_timeout = 1s

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   Among them, slowlog represents the path of slow logging, and request_slowlog_timeout represents the threshold of slow requests, in seconds. .

2. Optimize PHP code

In addition to adjusting the PHP-FPM configuration file, we can also improve the performance of the application by optimizing the PHP code. The following are some common optimization techniques and sample codes:

1. Reduce file read and write operations:
   Frequent file read and write operations will greatly reduce the execution efficiency of PHP. We can improve performance by reducing the number of file read and write operations. The following is an example:

   // 优化前
   for ($i = 0; $i < 100; $i++) {
    file_get_contents('file.txt');
   }
   
   // 优化后
   $file = file_get_contents('file.txt');
   for ($i = 0; $i < 100; $i++) {
    // 使用缓存数据
    echo $file;
   }

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2. Using caching:
   Caching can reduce frequent access to databases and other resources and improve the response speed of PHP applications. We can use various caching technologies such as Memcached, Redis, etc. The following is an example:

   $key = 'data';
   $data = $cache->get($key);
   if (!$data) {
    // 从数据库获取数据
    $data = $db->query('SELECT * FROM table');
    // 将数据存入缓存
    $cache->set($key, $data, 3600);
   }

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3. Reduce the number of database queries:
   Frequent database query operations are a common performance bottleneck. We can improve performance by reducing the number of unnecessary queries. The following is an example:

   // 优化前
   $result = $db->query('SELECT * FROM table');
   foreach ($result as $row) {
    // 处理数据
    // 进行其他操作
    $db->query('SELECT * FROM table2 WHERE id = '.$row['id']);
   }
   
   // 优化后
   $result = $db->query('SELECT * FROM table');
   $data = $db->query('SELECT * FROM table2 WHERE id IN ('.implode(',', array_column($result, 'id')).')');
   foreach ($result as $row) {
    // 处理数据
    // 进行其他操作
    $row_data = array_filter($data, function ($item) use ($row) {
        return $item['id'] == $row['id'];
    });
    // 使用$row_data进行后续操作
   }

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Summary:
Performance optimization of PHP-FPM is very important to improve the execution efficiency of PHP applications. By adjusting PHP-FPM's configuration files and optimizing PHP code, we can provide better response speed under high concurrency conditions. In actual development, we should conduct targeted performance optimization based on actual business needs and server configuration, combined with the above techniques, to improve the performance and user experience of PHP applications.

The above is my sharing of some PHP-FPM performance optimization techniques, I hope it will be helpful to developers. I wish you all the best in the development and optimization of PHP applications!

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