Module rate_limiter 

Rate limiter with exponential backoff and circuit breaker integration.

Provides per-provider rate limiting that respects 429 responses and backs off exponentially to avoid burning API budget.

Feature flag

Rate limit backoff is controlled by the RATE_LIMIT_BACKOFF_ENABLED environment variable (default: false for backward compatibility).

Structs

RateLimiter

Per-provider rate limit tracker with exponential backoff.

Functions

is_rate_limit_backoff_enabled

Whether rate limit backoff is enabled via environment variable.