HTTP 204 No Content vs 499 Client Closed Request
HTTP 204 (No Content) is a 2xx Success response, while 499 (Client Closed Request) is a 4xx Client Error response. 204 indicates that the server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body. In contrast, 499 means that a non-standard status code used by Nginx when the client closes the connection before the server responds.
คำอธิบาย
The server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body.
เมื่อคุณพบเห็น
After DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
วิธีแก้ไข
No fix needed. The action was successful; there is simply no content to return.
คำอธิบาย
A non-standard status code used by Nginx when the client closes the connection before the server responds.
เมื่อคุณพบเห็น
In Nginx logs when clients timeout or navigate away before receiving the response.
วิธีแก้ไข
Optimize server response times. Check for slow upstream services.
ความแตกต่างหลัก
204 is a 2xx Success response, while 499 is a 4xx Client Error response.
HTTP 204: The server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body.
HTTP 499: A non-standard status code used by Nginx when the client closes the connection before the server responds.
You encounter 204 when after DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
You encounter 499 when in Nginx logs when clients timeout or navigate away before receiving the response.
ควรใช้อันไหนเมื่อไร
For 204 (No Content): No fix needed. The action was successful; there is simply no content to return. For 499 (Client Closed Request): Optimize server response times. Check for slow upstream services.