Module rate_limiter 

速率限制和背压控制模块，防止AI API调用过载

Rate limiting and backpressure control module for AI API calls.

This module implements token bucket algorithms and backpressure mechanisms to prevent overwhelming AI providers with too many concurrent requests.

Key components:

• TokenBucket: Token bucket rate limiter implementation
• BackpressureController: Manages concurrent request limits
• RateLimiterConfig: Configuration for rate limiting parameters

Re-exports

pub use backpressure::BackpressureController;

pub use backpressure::BackpressurePermit;

pub use config::RateLimiterConfig;

pub use token_bucket::TokenBucket;

Modules

backpressure

Backpressure control for managing concurrent requests

config

Rate limiter configuration

token_bucket

Token bucket rate limiter implementation