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: `f355d565b79bd891910312af6d8c68fczrevrange('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：

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