In this comprehensive Node.js tutorial for 2025, you’ll master all HTTP 3xx status codes — the redirection category of HTTP responses used to guide clients and browsers from one URL to another. Understanding how these codes work is essential for backend developers, API designers, SEO specialists, and anyone building scalable web applications.

The 3xx status codes don’t just mean “redirect.” They carry different meanings that affect browser behavior, search engine indexing, and API client processing. In this tutorial, we break down every major and lesser-known HTTP 3xx code, complete with Node.js and native HTTP module examples.

What You’ll Learn:

300 Multiple Choices – Offering multiple resource options.

301 Moved Permanently – The go-to code for permanent redirects and SEO-friendly URL changes.

302 Found – Common temporary redirect with specific browser handling behavior.

303 See Other – Used for POST-redirect-GET patterns, especially in forms.

304 Not Modified – For caching efficiency and conditional GET requests.

305 Use Proxy (deprecated) – Why it’s rarely used today.

306 Switch Proxy (reserved) – Understanding its historical context.

307 Temporary Redirect – The modern standard for temporary redirects that preserve HTTP method.

308 Permanent Redirect – The permanent version of 307, designed for modern HTTP compliance.

Practical Use Cases You’ll See in This Tutorial:
Redirecting old blog URLs to new ones without losing SEO rankings.
Implementing language-based redirects for localized content.
Redirecting from HTTP to HTTPS for better security.
Using 304 Not Modified to reduce bandwidth usage and improve performance.
Avoiding infinite redirect loops by checking request URLs.

We’ll also cover:

The differences between temporary and permanent redirects

How status codes affect SEO and page ranking in search engines

When to use relative vs absolute URLs in redirects

How caching interacts with certain 3xx codes like 304

How to implement redirects using Node.js native HTTP module and Express.js

By the end of this tutorial, you’ll:

Understand all HTTP 3xx codes and their intended purposes.

Be able to choose the correct status code for your redirects.

Know how to implement SEO-friendly, high-performance redirect logic in Node.js.

This video is part of our Node.js 2025 Playlist, alongside related videos like “How to Handle Redirects in Node.js HTTP Module” for deeper, code-focused examples.

Keywords Covered: HTTP 3xx status codes, Node.js redirect codes, 301 vs 302 Node.js, 307 temporary redirect example, 308 permanent redirect Node.js, SEO-friendly redirects Node.js, 304 Not Modified Node.js, HTTP caching and redirects, backend redirect best practices 2025.

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