//! 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
pub use ;
pub use RateLimiterConfig;
pub use TokenBucket;