429 Solicitações demais
O usuário enviou muitas solicitações em um determinado período de tempo. Destinado a uso com esquemas limitadores de taxa. Este código foi aceito em RFC 6585 Códigos de Status HTTP Adicionais .
The429statuscodeindicatesthattheuserhassenttoomanyrequestsinagivenamountoftime("rate limiting"). The response representations SHOULD include details explaining the condition, and MAY include a Retry-After header indicating how long to wait before making a new request... Note that this specification does not define how the origin server identifies the user, nor how it counts requests. For example, an origin server that is limiting request rates can do so based upon counts of requests on a per-resource basis, across the entire server, or even among a set of servers. Likewise, it might identify the user by its authentication credentials, or a stateful cookie. Responses with the 429 status code MUST NOT be stored by a cache...