Epistates/TurboMCP

TurboMCP v2.0.3 - Stability Release

Critical Fixes

• Fixed "JoinHandle polled after completion" panics across all transports (STDIO, WebSocket, TCP, Client)
• Resolved macro doc test compilation failures - users can now run cargo test without errors
• Comprehensive task lifecycle management with graceful shutdown and resource cleanup

New Features

• Configurable concurrency limits for production deployments
• WebSocket Server: max_concurrent_requests (default: 100)
• Client: max_concurrent_handlers (default: 100)
• Tuning guide: 50 (low-resource) → 100 (standard) → 500 (high-performance) → 1000 (max)

Testing & Quality

• 29 new tests covering concurrency configuration and lifecycle management
• Comprehensive test coverage for all transport layers
• Regression prevention for shutdown panics

Developer Experience

• Improved macro system with better compilation and feature documentation
• Clear feature requirements with Cargo.toml examples
• Backward compatible - no breaking changes

Production Ready

• Automatic backpressure prevents resource exhaustion
• Graceful shutdown with configurable timeouts
• Resource tuning based on available memory/CPU

Issues Resolved

#1 Reported by: https://github.com/IgnisDa

This release represents a major stability improvement with production-ready concurrency controls and comprehensive fixes for critical shutdown issues.