503 at-capacity
At capacity
https://errors.rdna.ai/at-capacity
This API instance has reached its concurrency limit for expensive work.
- Code
- at-capacity
- Status
- HTTP 503
- Retryable
- Yes
Meaning
The server is applying transient backpressure because no concurrency permit is available for an expensive endpoint.
When it is returned
The API returns this problem before starting expensive work when the current instance is already at its configured concurrency ceiling.
Client handling
Retry after the Retry-After interval. The same number of seconds appears as retry_after in the body. Apply jitter and a bounded attempt limit, and reduce client concurrency if this response recurs.