HTTP 103 Early Hints vs 409 Conflict
HTTP 103 (Early Hints) is a 1xx Informational response, while 409 (Conflict) is a 4xx Client Error response. 103 indicates that used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response. In contrast, 409 means that the request conflicts with the current state of the server. Often due to concurrent modification or business rule violations.
Mô tả
Used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response.
Khi bạn thấy mã này
When a server wants the browser to start loading CSS/JS before the full response is ready.
Cách khắc phục
No fix needed. This optimization helps speed up page loading.
Mô tả
The request conflicts with the current state of the server. Often due to concurrent modification or business rule violations.
Khi bạn thấy mã này
When trying to create a resource that already exists, or updating a resource that was modified by another request.
Cách khắc phục
Refresh the resource state, resolve conflicts, and retry. Use ETags for optimistic concurrency.
Sự khác biệt chính
103 is a 1xx Informational response, while 409 is a 4xx Client Error response.
HTTP 103: Used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response.
HTTP 409: The request conflicts with the current state of the server. Often due to concurrent modification or business rule violations.
You encounter 103 when when a server wants the browser to start loading CSS/JS before the full response is ready.
You encounter 409 when when trying to create a resource that already exists, or updating a resource that was modified by another request.
Khi nào dùng cái nào
For 103 (Early Hints): No fix needed. This optimization helps speed up page loading. For 409 (Conflict): Refresh the resource state, resolve conflicts, and retry. Use ETags for optimistic concurrency.