HTTP response status codes

HTTP response status codes

HTTP response status codes indicate whether a specific HTTP request has been successfully completed

Common HTTP status codes and reason:

400 Bad Request

– This means that client-side input fails validation.

401 Unauthorized

– This means the user isn’t not authorized to access a resource. It usually returns when the user isn’t authenticated.

403 Forbidden

– This means the user is authenticated, but it’s not allowed to access a resource.

404 Not Found

– This indicates that a resource is not found.

500 Internal server error

– This is a generic server error. It probably shouldn’t be thrown explicitly.

502 Bad Gateway

– This indicates an invalid response from an upstream server.

503 Service Unavailable

– This indicates that something unexpected happened on server side (It can be anything like server overload, some parts of the system failed, etc.).

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