DeveloperBreeze

Simple RESTful API in Node.js using Express

January 26, 2024

javascript

// Import 'express' module
const express = require('express');
const app = express();

// Define a route for accessing a resource
app.get('/api/resource', (req, res) => {
  res.json({ message: 'Resource data' });
});

// Start the server and listen on port 3000
app.listen(3000, () => {
  console.log('RESTful API is running on port 3000');
});

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Build a Custom Rate Limiter in Node.js with Redis

REDIS_URL=redis://localhost:6379

// redisClient.js
const redis = require("redis");

const client = redis.createClient({ url: process.env.REDIS_URL });

client.on("error", (err) => console.error("Redis error:", err));
client.connect();

module.exports = client;

Apr 04, 2025 Tutorial

Building a RESTful API with Go and Gorilla Mux

Add the updateBook function to main.go:

func updateBook(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	params := mux.Vars(r)
	for index, item := range books {
		if item.ID == params["id"] {
			books = append(books[:index], books[index+1:]...)
			var book Book
			_ = json.NewDecoder(r.Body).Decode(&book)
			book.ID = params["id"]
			books = append(books, book)
			json.NewEncoder(w).Encode(book)
			return
		}
	}
	json.NewEncoder(w).Encode(books)
}

Aug 12, 2024 Tutorial

Building a Real-Time Chat Application with WebSockets in Node.js

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Real-Time Chat</title>
    <link rel="stylesheet" href="styles.css">
</head>
<body>
    <div class="chat-container">
        <ul id="messages"></ul>
        <form id="chat-form">
            <input id="message" autocomplete="off" placeholder="Type a message" />
            <button type="submit">Send</button>
        </form>
    </div>
    <script src="/socket.io/socket.io.js"></script>
    <script src="main.js"></script>
</body>
</html>

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.chat-container {
    background-color: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 300px;
}

#messages {
    list-style-type: none;
    padding: 0;
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 10px;
}

#messages li {
    padding: 8px;
    background-color: #f1f1f1;
    border-radius: 3px;
    margin-bottom: 5px;
}

#chat-form {
    display: flex;
}

#message {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 3px;
    margin-right: 5px;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 3px;
    padding: 8px 12px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

Aug 03, 2024 Tutorial

JWT Token Creation and Verification in Node.js using 'jsonwebtoken'

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Jan 26, 2024 Code

Simple HTTP Server in Node.js

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Jan 26, 2024 Code

Read and Write Files in Node.js using 'fs' module

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Jan 26, 2024 Code

Date Manipulation and Sum Calculation

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Jan 26, 2024 Code

Access Command-line Arguments

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Jan 26, 2024 Code

Set and Access Environment Variable

// Set an environment variable
process.env.API_KEY = 'your-api-key';

// Access and log the environment variable
console.log('API Key:', process.env.API_KEY);

Jan 26, 2024 Code