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HTTP headers

Retry-After HTTP Header Meaning

Retry-After tells the client when to try the request again.

Meaning

The server is giving either a delay in seconds or an HTTP date for retry timing.

Where it appears

Rate limits, maintenance windows, and overloaded services use it with 429 or 503 responses.

What to check

Check whether clients respect the value and whether the server returns a realistic retry window.

Example

Retry-After: 120

References

Related HTTP status codes