Orchestrating Logic
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Quick reference for HTTP status codes with descriptions and usage examples. Essential for API development and debugging.
The server has received the request headers and the client should proceed to send the request body.
The requester has asked the server to switch protocols.
Server has received and is processing the request, but no response is available yet.
Standard response for successful HTTP requests.
The request has been fulfilled, resulting in the creation of a new resource.
The request has been accepted for processing, but the processing has not been completed.
The server successfully processed the request and is not returning any content.
The server is delivering only part of the resource due to a range header sent by the client.
This and all future requests should be directed to the given URI.
The resource was found, but at a different URI (Temporary Redirect).
Indicates that the resource has not been modified since the version specified by the request headers.
The request should be repeated with another URI; however, future requests should still use the original URI.
The request and all future requests should be repeated using another URI.
The server cannot or will not process the request due to an apparent client error.
Similar to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided.
The request contained valid data and was understood by the server, but the server is refusing action.
The requested resource could not be found but may be available in the future.
A request method is not supported for the requested resource.
The server timed out waiting for the request.
Indicates that the request could not be processed because of conflict in the current state of the resource.
Indicates that the resource requested is no longer available and will not be available again.
The request is larger than the server is willing or able to process.
The request entity has a media type which the server or resource does not support.
The request was well-formed but was unable to be followed due to semantic errors.
The user has sent too many requests in a given amount of time.
A generic error message, given when an unexpected condition was encountered.
The server either does not recognize the request method, or it lacks the ability to fulfill the request.
The server was acting as a gateway or proxy and received an invalid response from the upstream server.
The server cannot handle the request (because it is overloaded or down for maintenance).
The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.
HTTP response status codes indicate whether a specific HTTP request has been successfully completed. They are grouped into five classes based on the first digit of the code. Mastering these is essential for API debugging and web performance optimization.
The action was successfully received, understood, and accepted.
Further action must be taken in order to complete the request.
The request contains bad syntax or cannot be fulfilled.
The server failed to fulfill an apparently valid request.
When building REST APIs, always use the most specific status code possible. For example, use 201 Created instead of 200 OK when a resource is successfully added, and 429 Too Many Requests for rate limiting.
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