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: 120References
- Registry
- IANA HTTP Field Name Registry
- Guide
- MDN Retry-After