HTTP 429 Too Many Requests

The client has exceeded a rate limit in a given period.

Use 429 for throttling and include Retry-After plus RateLimit-* quota metadata when clients can retry later.

httpstatus coderate limitretry

Response (http)

HTTP/1.1 429 Too Many Requests

Use 429 for throttling and include Retry-After plus RateLimit-* quota metadata when clients can retry later.

Common mistakes

Throttling without Retry-After or rate-limit metadata, leaving clients to guess when to come back.

Registry reference: rfc6585

Sources