HTTP Articles
HTTP 301 Moved Permanently — What It Means
What HTTP status code 301 Moved Permanently means, when servers return it, and how to handle it correctly.
HTTP 206 Partial Content — What It Means
What HTTP status code 206 Partial Content means, when servers return it, and how to handle it correctly.
HTTP 204 No Content — What It Means
What HTTP status code 204 No Content means, when servers return it, and how to handle it correctly.
HTTP 202 Accepted — What It Means
What HTTP status code 202 Accepted means, when servers return it, and how to handle it correctly.
HTTP 201 Created — What It Means
What HTTP status code 201 Created means, when servers return it, and how to handle it correctly.
HTTP 200 OK — What It Means
What HTTP status code 200 OK means, when servers return it, and how to handle it correctly.
HTTP 101 Switching Protocols — What It Means
What HTTP status code 101 Switching Protocols means, when servers return it, and how to handle it correctly.
HTTP 100 Continue — What It Means
What HTTP status code 100 Continue means, when servers return it, and how to handle it correctly.
What Is a REST API? Principles Explained Simply
REST is an architectural style for web APIs built around resources, standard HTTP methods, and stateless requests. Learn its core principles with examples.
What Does Idempotent Mean in HTTP? GET, PUT, DELETE Explained
An idempotent HTTP method produces the same result no matter how many times it's repeated. Learn which methods are idempotent and why it matters for retries.
What Is CORS and Why Does It Block My API Requests?
CORS is a browser security mechanism that blocks cross-origin requests unless the server explicitly allows them. Learn how it works and how to fix common CORS errors.
GET vs POST — What's the Difference in HTTP?
GET requests data and should have no side effects; POST submits data and can change server state. Learn the practical differences and when to use each.
HTTP 500 Internal Server Error — What Causes It and How to Debug
A 500 error means the server hit an unexpected condition it couldn't handle. Learn how to find the real cause using server logs and where to start debugging.
HTTP 404 Not Found — What It Means and How to Fix It
A 404 status code means the server couldn't find the requested resource. Learn the common causes on both client and server side, and how to debug it.