HTTP 200 OK vs 499 Client Closed Request
HTTP 200 (OK) is a 2xx Success response, while 499 (Client Closed Request) is a 4xx Client 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, 499 means that a non-standard status code used by Nginx when the client closes the connection before the server responds.
Description
The request succeeded. The meaning depends on the HTTP method: GET returns the resource, POST reports the action result, HEAD returns headers only.
When You See It
The most common HTTP response — indicates the request was processed successfully.
How to Fix
No fix needed. The request succeeded as expected.
Description
A non-standard status code used by Nginx when the client closes the connection before the server responds.
When You See It
In Nginx logs when clients timeout or navigate away before receiving the response.
How to Fix
Optimize server response times. Check for slow upstream services.
Key Differences
200 is a 2xx Success response, while 499 is a 4xx Client 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 499: A non-standard status code used by Nginx when the client closes the connection before the server responds.
You encounter 200 when the most common HTTP response — indicates the request was processed successfully.
You encounter 499 when in Nginx logs when clients timeout or navigate away before receiving the response.
When to Use Which
For 200 (OK): No fix needed. The request succeeded as expected. For 499 (Client Closed Request): Optimize server response times. Check for slow upstream services.