How to build a real-time monitoring system using PHP and REDIS

How to use PHP and Redis to build a real-time monitoring system

Introduction:
The real-time monitoring system is an important part of modern Internet applications. It is used to collect, analyze and display various types of data in real time, helping us Understand the system's operating status, performance, user behavior and other information. This article will introduce how to use PHP and Redis to build a simple real-time monitoring system, and provide corresponding code examples for reference.

1. Preparation
In order to complete our real-time monitoring system, we need to prepare and install and configure the following components: PHP, Redis and Composer.

• PHP: We use PHP as the back-end language to handle functions such as data collection, analysis and display.
• Redis: We use Redis as data storage and cache to realize real-time data storage and fast query.
• Composer: Composer is a dependency management tool for PHP. We use it to manage our PHP dependency packages.

2. Build the project

1. Create the project directory and enter the directory: `
   $ mkdir real_time_monitor
   $ cd real_time_monitor

2. ##Initialize Composer:

   `$ composer init
   

Fill in the project information according to the prompts, and Generate

composer.json file.

3. Install PHP Redis extension:

   `$ composer require predis/predis
   

   该命令会自动下载并安装Redis的PHP扩展。安装完成后，我们可以在项目的`vendor`目录下看到相关的文件。

4. Create project file structure And configuration file:

   `$ mkdir src
   $ touch src/index.php config.php
   

First create

srcDirectory, used to store our PHP code files. Then create the index.php file as our entry file, and config.php to store our configuration information.

5. Write code

Configure Redis connection: In the
1. config.php file, we need to configure the Redis connection information: `

$config = [

'host' => '127.0.0.1',    // Redis主机地址
'port' => 6379,           // Redis端口
'database' => 0,          // Redis数据库编号

];

return $config;

2. 收集数据：在`index.php`文件中，我们需要编写代码来收集需要监控的数据，并将其存入Redis中。以下是一个示例代码：```
<?php

require_once __DIR__ . '/../vendor/autoload.php';

use PredisClient;

// 引入配置文件
$config = require_once __DIR__ . '/../config.php';

// 连接Redis
$redis = new Client($config);

// 收集CPU使用率数据
$cpuUsage = getCpuUsage();
$redis->zadd('monitor:cpu_usage', [time() => $cpuUsage]);

// 收集内存使用数据
$memoryUsage = getMemoryUsage();
$redis->zadd('monitor:memory_usage', [time() => $memoryUsage]);

// 其他数据的收集和存储...

Query data: We can query the data in Redis through the following code, and perform corresponding display and analysis:
3. `

require_once

DIR . '/../vendor/autoload.php';

use PredisClient;

//Introduce configuration file

$config = require_once
DIR . '/../config.php';

// Connect to Redis

$redis = new Client($config);

// Before querying and displaying the CPU usage Data for 10th place

$result = $redis->zrevrange('monitor:cpu_usage', 0, 9, 'WITHSCORES');
foreach ($result as $timestamp => $cpuUsage) {

echo "时间：".date('Y-m-d H:i:s', $timestamp)."，CPU使用率：".$cpuUsage."

";

}

//Query and display the top 10 memory usage data

$result = $redis->zrevrange('monitor:memory_usage', 0 , 9, 'WITHSCORES');
foreach ($result as $timestamp => $memoryUsage) {

echo "时间：".date('Y-m-d H:i:s', $timestamp)."，内存使用：".$memoryUsage."

";

}

// Query for other data And display...

六、运行项目
1. 收集数据：通过命令行执行以下命令进行数据的收集：```
$ php src/index.php

Query data: Also execute the following command through the command line to query data:
2. `$ php src/index.php
   

运行以上命令后，我们可以看到相应的数据展示在命令行中。

总结：

The above is the detailed content of How to build a real-time monitoring system using PHP and REDIS. For more information, please follow other related articles on the PHP Chinese website!