HTTP 202 Accepted vs 426 Upgrade Required
HTTP 202 (Accepted) is a 2xx Success response, while 426 (Upgrade Required) is a 4xx Client Error response. 202 indicates that the request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon. In contrast, 426 means that the server refuses to perform the request using the current protocol but might after the client upgrades to a different protocol.
描述
The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon.
何时出现
For async operations like batch jobs, email sending, or background tasks that take time to complete.
如何修复
Poll the provided status URL or wait for a callback/webhook.
描述
The server refuses to perform the request using the current protocol but might after the client upgrades to a different protocol.
何时出现
When a server requires HTTPS or a newer protocol version.
如何修复
Switch to the protocol specified in the Upgrade response header.
主要区别
202 is a 2xx Success response, while 426 is a 4xx Client Error response.
HTTP 202: The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon.
HTTP 426: The server refuses to perform the request using the current protocol but might after the client upgrades to a different protocol.
You encounter 202 when for async operations like batch jobs, email sending, or background tasks that take time to complete.
You encounter 426 when when a server requires HTTPS or a newer protocol version.
何时使用哪个
For 202 (Accepted): Poll the provided status URL or wait for a callback/webhook. For 426 (Upgrade Required): Switch to the protocol specified in the Upgrade response header.