common HTTP status codes
Nishanth ??? ????♂?? ? ???????
Sr. Software Engineer III @ FIS Global Business Pvt Ltd | Expertise in AWS, Kubernetes, and Generative AI Engineering Specialist - #CloudMasters,#pythondeveloper,#LLM,#CostOptimization,#AIOps,#DL,and #NeuralNetworks
Status codes are three-digit numbers that web servers use to communicate the outcome of an HTTP (Hypertext Transfer Protocol) request made by a client (typically a web browser or application).
They provide a standardized way to indicate whether a request was successful, encountered an issue, or requires further action.
1. 2xx (Successful):
- These status codes indicate that the request was received, understood, and successfully processed.
- 200 OK: The request was successful, and the server is providing the requested content (e.g., a web page).
2. 3xx (Redirection):
- These status codes indicate that further action is needed to complete the request, often involving redirection to a different URL.
- 301 Moved Permanently: The requested resource has been permanently moved to a new location, and the client should update its bookmarks or links.
- 302 Found (or 307 Temporary Redirect): The requested resource is temporarily located at a different URL, and the client should use that URL for the current request.
3. 4xx (Client Error):
- These status codes indicate that there was an issue with the client's request, such as a malformed request or authentication problems.
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- 400 Bad Request: The server didn't understand the request due to invalid syntax or missing parameters.
- 401 Unauthorized: Authentication is required, and the client's credentials are either missing or invalid.
- 403 Forbidden: The client is authenticated but doesn't have permission to access the requested resource.
- 404 Not Found: The requested resource could not be found on the server.
4. 5xx (Server Error):
- These status codes indicate that the server encountered an error or was unable to fulfill a valid request.
- 500 Internal Server Error: A generic error message indicating that something went wrong on the server, often due to a misconfiguration or a bug.
- 502 Bad Gateway: The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed.
- 503 Service Unavailable: The server is temporarily unable to handle the request, typically due to maintenance or overloading.
Nishanth Pro tip-
HTTP status codes are like standardized messages from a web server to a client, informing it about the result of its request. They help users and developers understand what happened during the interaction with a website or web application. The first digit of the status code categorizes it, making it easy to identify whether the request was successful, needs redirection, or encountered an error.