Unverified60% confidenceSolutionExact time
When an API returns a 429 (quota exceeded) or 5xx (service error) status code, the routing layer can capture the signal and resubmit the request to the next provider in the chain.
2
Sources
60%
Confidence
Long-term
Relevance
7/20/2026
First Seen
Sources
Related Claims
UnverifiedServices that conform to HTTP semantics often include a Retry-After response header when returning 429, indicating the recommended number of seconds to wait, and clients should prioritize following that value.72% similarUnverified断点续传依赖于 HTTP/1.1 协议中的 Range 请求头机制（RFC 7233），服务器返回 206 Partial Content 状态码70% similarUnverifiedHTTP 429是HTTP协议中专门用于表示速率限制的状态码，服务器通常附带Retry-After响应头69% similarUnverifiedopenai-php/client maps HTTP 429 to RateLimitException, the raw response is available via $e->response, and the Retry-After header can be read.69% similarUnverifiedThe semantics of HTTP response codes are: 2xx indicates success, 4xx indicates a client error, and 5xx indicates a server error.68% similar
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