The client sent too many requests in a given period; Retry-After indicates when to retry.
Quick facts
When does it occur
The client sent too many requests in a given period; Retry-After indicates when to retry.
It belongs to the 4xx Client Error class of responses, defined in RFC6585#4.
Browse all codes in this class: 4xx Client Error
How to fix it
Back off and retry after the Retry-After delay, or reduce the request rate.
Common causes
How to fix it
Double-check the URL, return to the homepage and search again, or retry later.
Back off and retry after the Retry-After delay, or reduce the request rate.
Review access logs and permission rules for the affected path, and confirm routing and security policies.
Frequently asked questions
429 belongs to the 4xx Client Error class and is generally not cached for long; behavior is controlled by Cache-Control.
4xx Client Error: The client sent too many requests in a given period; Retry-After indicates when to retry.
Sources & standards
Updated 2026-08-18
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