In this in-depth Node.js tutorial for 2025, you’ll master all HTTP 2xx status codes — the “Success” category of HTTP responses that indicate a client’s request was successfully received, understood, and processed by the server.

Understanding 2xx status codes is essential for backend developers, API designers, and full-stack engineers, as these codes not only confirm successful operations but also communicate important details about the response type.

In this tutorial, we’ll cover each major 2xx code with practical Node.js and Express.js examples:

200 OK – Standard success response for GET, POST, and other HTTP methods.

201 Created – Used when a resource is successfully created (e.g., user registration, file upload).

202 Accepted – Request accepted for processing but not yet completed (useful for async tasks).

203 Non-Authoritative Information – Response modified from an original source.

204 No Content – Success without a response body (common in DELETE requests).

205 Reset Content – Client should reset its document view (rare but useful in certain forms).

206 Partial Content – Handling range requests for large file downloads and streaming.

207 Multi-Status (from WebDAV) – Returning multiple statuses for batch operations.

208 Already Reported – Avoiding repeated information in WebDAV responses.

226 IM Used – Indicates a resource was returned with server-side transformations applied.

What you’ll learn in this tutorial:

How to send 2xx status codes in Node.js with Express.js

The differences between common and lesser-known 2xx codes

When to use each 2xx status code for proper API design

How status codes impact REST API best practices and client-server communication

Using correct 2xx responses for SEO, API integration, and performance optimization

How 2xx codes affect caching, response parsing, and HTTP clients

We’ll also walk through real-world examples, including:
Returning 201 Created for API POST requests
Sending 204 No Content for DELETE operations
Using 206 Partial Content to implement video streaming
Sending 202 Accepted for queued background jobs

By the end of this video, you will not only memorize all HTTP 2xx codes but also understand exactly when and how to use them in Node.js projects. This knowledge will make your APIs more professional, predictable, and developer-friendly.

This tutorial is part of our Node.js 2025 Playlist, which includes deep dives into other HTTP status code categories (1xx, 3xx, 4xx, 5xx) to help you become a HTTP and API design expert.

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