HTTP 103 Early Hints vs 422 Unprocessable Content
HTTP 103 (Early Hints) is a 1xx Informational response, while 422 (Unprocessable Content) 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, 422 means that the server understands the content type and syntax, but was unable to process the contained instructions. Common in API validation errors.
Описание
Used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response.
Когда вы это видите
When a server wants the browser to start loading CSS/JS before the full response is ready.
Как исправить
No fix needed. This optimization helps speed up page loading.
Описание
The server understands the content type and syntax, but was unable to process the contained instructions. Common in API validation errors.
Когда вы это видите
When form validation fails — correct syntax but invalid data (e.g., email format wrong, date in the past).
Как исправить
Check the response body for specific validation errors and correct the input data.
Ключевые различия
103 is a 1xx Informational response, while 422 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 422: The server understands the content type and syntax, but was unable to process the contained instructions. Common in API validation errors.
You encounter 103 when when a server wants the browser to start loading CSS/JS before the full response is ready.
You encounter 422 when when form validation fails — correct syntax but invalid data (e.g., email format wrong, date in the past).
Когда что использовать
For 103 (Early Hints): No fix needed. This optimization helps speed up page loading. For 422 (Unprocessable Content): Check the response body for specific validation errors and correct the input data.