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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: 120

Description

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.

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