Building the Polly that Python never had

Short summary

A new Python library called nopanic provides composable resilience patterns — retry, timeout, circuit breaker, fallback, and backoff — for apps calling external APIs. Policies compose via a decorator-based API with no wrapper exceptions, injectable clocks for testing, and event-stream observability. The library also applies TCP's AIMD congestion control to API quotas, and the author reports measured overhead of 0.15-1.3 microseconds per policy call.

• •nopanic offers composable retry, timeout, circuit breaker, fallback, and backoff for Python
• •Decorator-based API with no wrapper exceptions, injectable clocks, and event-stream observability
• •Applies TCP AIMD congestion control to API quotas; overhead of 0.15-1.3µs per policy

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