Implementing high-concurrency online ordering system based on Workerman

A high-concurrency online ordering system based on Workerman

Introduction:

With the popularization of the Internet and the improvement of people's living standards, more and more More and more people are choosing to eat out instead of cooking at home. Therefore, online ordering systems have gradually become an important part of the catering industry. In order to meet the needs of a large number of users ordering food online at the same time, we can use Workerman, a high-performance PHP Socket framework, to build a high-concurrency online ordering system.

Part One: Environment Preparation

1. Installing PHP: Workerman is a PHP-based Socket framework, so PHP needs to be installed on the server first.
2. Install Composer: Composer is a PHP package management tool that can easily introduce third-party libraries. Install Composer on the server.
3. Install Workerman: Use Composer to install the Workerman library and execute the command: composer require workerman/workerman.

Part 2: Server-side implementation

1. Create a WebSocket server:

   <?php
   require_once __DIR__.'/vendor/autoload.php';
   
   // 创建一个Worker监听8080端口
   $ws_worker = new WorkermanWorker('websocket://0.0.0.0:8080');
   
   // 运行线程数
   $ws_worker->count = 4;
   
   // 处理连接事件
   $ws_worker->onConnect = function ($connection) {
       echo "新连接
   ";
   };
   
   // 处理消息事件
   $ws_worker->onMessage = function ($connection, $data) {
       echo "收到消息：".$data."
   ";
       // TODO：处理消息逻辑
       $connection->send("收到消息：".$data);
   };
   
   // 启动服务器
   WorkermanWorker::runAll();

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   This code creates a WebSocket server and listens 8080 port and can handle multiple connections. When a new connection is connected, the onConnect event will be triggered. When a message is received, the onMessage event will be triggered.

2. Add ordering logic:

   // 处理消息事件
   $ws_worker->onMessage = function ($connection, $data) {
       echo "收到消息：".$data."
   ";
       
       // 将收到的消息转换为数组
       $data_array = json_decode($data, true);
       
       // TODO：根据消息内容处理点餐逻辑
       $menu_id = $data_array['menu_id'];
       $menu_name = getMenuName($menu_id);
       $order_id = createOrder($menu_name);
       
       $result = array(
           'status' => 'success',
           'order_id' => $order_id,
       );
       
       // 将处理结果发送给客户端
       $connection->send(json_encode($result));
   };

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   When receiving a message, we first convert the received message into an array, and then perform ordering logic processing based on the message content , including operations such as obtaining menu names and creating orders. Finally, the processing results are encapsulated into an array, and then converted into JSON format and sent to the client.

Part 3: Client Implementation

The client can use a web browser as the client to communicate with the server through JavaScript.

<script>
// 创建WebSocket对象
var ws = new WebSocket('ws://localhost:8080');

// 连接成功事件
ws.onopen = function() {
    console.log('连接成功');
};

// 收到消息事件
ws.onmessage = function(evt) {
    console.log('收到消息：' + evt.data);
};

// 发送消息
function sendMessage(message) {
    ws.send(message);
}
</script>

This JavaScript code creates a WebSocket object and sets callback functions for the connection success event and the message received event. When sending a message, you can call the sendMessage function to send the message to the server.

Summary:

This article introduces how to implement a highly concurrent online ordering system based on the Workerman framework. By using Workerman's high-performance PHP Socket framework, we can easily create a WebSocket server and handle multiple connections and concurrent requests. This can improve the response speed of the system and meet the needs of a large number of users ordering food online at the same time. Hope this article is helpful to everyone.

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