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Articles, guides, and insights about HTTP status codes and web development
·8 min read
Understanding HTTP 308 Permanent Redirect: Method-Preserving Redirects Done Right
How 308 Permanent Redirect differs from 301, why it preserves the HTTP method, the full 301/302/303/307/308 matrix, framework gotchas (including Next.js), caching, and SEO.3xxRedirection·9 min read
Understanding HTTP 401 Unauthorized: Authentication, WWW-Authenticate, and the 401 vs 403 Trap
What 401 Unauthorized really means (authentication, not authorization), why the WWW-Authenticate header is mandatory, when to use 401 vs 403 vs 407, and how to return and handle it correctly.4xxClient Error·10 min read
Understanding HTTP 404 Not Found: Why It Happens and What to Do About It
The internet's most famous error explained — what 404 really means, when to use it vs. 410 or 403, how it affects SEO, and how to build a 404 page that doesn't lose users.4xxClient Error·10 min read
Understanding HTTP 503 Service Unavailable: Planned Downtime, Overload, and Graceful Failure
A deep dive into HTTP 503 — when to return it, why Retry-After matters, how to ship maintenance windows without trashing your SEO, and the differences between 503, 500, 502, and 429.5xxServer Error·8 min read
Understanding HTTP 103 Early Hints: Faster Pages with Smarter Preloads
How HTTP 103 Early Hints lets the server tell the browser what to preload before the real response is ready — what it does, when it helps, and how to ship it.1xxInformational·10 min read
Understanding NGINX 499 Client Closed Request: When Your Users Give Up First
A deep dive into NGINX's 499 status code — what it means when the client hangs up before the server can respond, and how to use it as a leading indicator of problems.NGINX·7 min read
Understanding HTTP 301 Redirects: SEO, Migrations, and Common Pitfalls
A comprehensive guide to HTTP 301 Moved Permanently — when to use it, how it affects SEO, implementation examples, and mistakes that can tank your rankings.3xxRedirection·8 min read
Understanding 429 Too Many Requests: Rate Limiting Done Right
A deep dive into HTTP 429 Too Many Requests — why rate limiting matters, how to implement it on the server, and how to handle it gracefully as a client.4xxClient Error·5 min read
Understanding HTTP 200 OK: The Success Status Code Explained
A comprehensive guide to the HTTP 200 OK status code — what it means, how it varies by HTTP method, common pitfalls, and best practices for API design.2xxSuccess·7 min read
Understanding 500 Internal Server Error: Causes, Debugging, and Prevention
A deep dive into HTTP 500 Internal Server Error — what triggers it, how to debug it, and strategies to prevent unhandled server failures in production.5xxServer Error·4 min read