13 Most Common HTTP Status Codes You Should Know As A Developer

HTTP status codes are three-digit numbers servers use to communicate the outcome of a client's request. The first digit indicates the general response category, such as success or error. Common codes include 200 for successful requests and 404 for resources not found. Other codes like 301 signal permanent redirects, while 400 indicates a bad request from the client. Server errors, such as 500, mean something went wrong on the server side. Using the correct status code consistently with helpful messages is crucial for API design. Monitoring these codes helps identify server problems or broken links. Code 418, "I'm a teapot", is a humorous exception. Understanding these codes is essential for debugging and building reliable web applications.