HTTP 200 OK vs 503 Service Unavailable
HTTP 200 (OK) is a 2xx Success response, while 503 (Service Unavailable) is a 5xx Server Error response. 200 indicates that the request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only. In contrast, 503 means that the server is temporarily unable to handle the request due to maintenance or overload. Should include a Retry-After header.
Mô tả
The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.
Khi bạn thấy mã này
The most common HTTP response — indicates the request was processed successfully.
Cách khắc phục
No fix needed. The request succeeded as expected.
Mô tả
The server is temporarily unable to handle the request due to maintenance or overload. Should include a Retry-After header.
Khi bạn thấy mã này
During maintenance windows, server overload, or when the application pool is exhausted.
Cách khắc phục
Wait and retry. Check the Retry-After header. Scale up servers if it's a capacity issue.
Sự khác biệt chính
200 is a 2xx Success response, while 503 is a 5xx Server Error response.
HTTP 200: The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.
HTTP 503: The server is temporarily unable to handle the request due to maintenance or overload. Should include a Retry-After header.
You encounter 200 when the most common HTTP response — indicates the request was processed successfully.
You encounter 503 when during maintenance windows, server overload, or when the application pool is exhausted.
Khi nào dùng cái nào
For 200 (OK): No fix needed. The request succeeded as expected. For 503 (Service Unavailable): Wait and retry. Check the Retry-After header. Scale up servers if it's a capacity issue.