Response
Retry-After
Tells the client how long to wait before making a new request after being rate-limited or redirected.
Syntax
Retry-After: <delay-seconds> | <http-date>Example
Retry-After: 120Description
The Retry-After header is sent with 429 Too Many Requests, 503 Service Unavailable, or 301/302 redirect responses. It indicates how long the client should wait before retrying.
The value can be a delay in seconds or an absolute HTTP date. Clients should respect this header to avoid hammering the server and to implement proper backoff behaviour.
How real sites send this header
Home-page responses of 503 popular sites from the enterno.io /check catalogue, checked in the last 30 days.
0.8%
(4 of 503) send Retry-After.
Most common values:
0— 4 sites
See it on: bloomberg.com, reddit.com, target.com, fastly.com
Check if your website sends this header correctly
Check your headers →