# Rust Rabbit Roadmap
This document outlines the planned evolution of the rust-rabbit library following its major simplification revamp. The roadmap is organized by priority and estimated complexity.
## Version 1.0 - Simplified Foundation (Released)
### Completed
- **Simple Publisher API**: Two-method interface (`publish_to_exchange`, `publish_to_queue`)
- **Auto-declaring Consumer**: Automatic queue/exchange setup with retry support
- **Flexible Retry System**: Exponential, linear, and custom delay patterns
- **Basic Connection Management**: Simple connection with auto-reconnection
- **Clean Dependencies**: Reduced from 15+ to 7 essential dependencies
- **Comprehensive Documentation**: User guides, examples, and API docs
- **Production Examples**: Real-world usage patterns and best practices
### Goals Achieved
- Simplicity: Easy to use with minimal configuration
- Reliability: Built-in retry mechanisms and error handling
- Flexibility: Configurable retry strategies for different use cases
- Performance: Efficient message processing with configurable concurrency
## Version 1.1 - Stability & Documentation (Released)
### Completed Features
- **Enhanced Documentation**: Complete restructure of README and docs guides
- **Error Handling Improvements**: Better error classification and retry logic
- **Code Quality**: Clean clippy warnings, comprehensive test coverage
- **API Stability**: Stabilized core Publisher/Consumer APIs
## Version 1.2.0 (Current - MassTransit & Advanced Retry)
### Completed Features
- **MassTransit Integration**
- Full MassTransit message format support
- Message envelope with metadata (correlation ID, source/destination addresses)
- URN-based message type specification
- Seamless interoperability with .NET MassTransit applications
- **Advanced Delay Strategies**
- `DelayStrategy` enum with TTL and DelayedExchange options
- TTL-based delays using message expiration
- x-delayed-message exchange support for precise timing
- Configurable delay strategy per retry configuration
- **Dead Letter Queue Enhancements**
- `with_dlq_ttl()` method for TTL-based message expiration
- Improved DLQ configuration and handling
- Better poison message detection
### Goals Achieved
- Cross-platform messaging with .NET ecosystems
- Flexible retry timing mechanisms
- Production-ready DLQ handling
## Version 1.3 - Enhanced Observability & Monitoring (Q2 2026)
### Monitoring & Debugging
- **Basic Metrics Collection**
- Message throughput (messages/second)
- Retry counts and failure rates
- Connection health status
- Queue depth monitoring
- **Structured Logging Enhancement**
- Consistent log format across all components
- Configurable log levels per component
- Request correlation IDs for tracing
- Performance timing logs
- **Health Check Endpoint**
- Simple HTTP endpoint for health monitoring
- Connection status reporting
- Queue connectivity verification
- Optional Prometheus metrics export
### Circuit Breaker Pattern
- Automatic circuit opening on repeated failures
- Configurable failure thresholds
- Exponential backoff for circuit recovery
- Per-queue circuit breaker state
### Configuration Enhancements
- **Environment-based Configuration**
- Support for `.env` files
- Environment variable override patterns
- Configuration validation and defaults
- **Retry Policy Presets**
- Pre-configured policies for common scenarios
- Database operation retry patterns
- API call retry strategies
## Version 1.4 - Performance Optimization (Q3 2026)
### Performance Features
- **Message Batching**
- Configurable batch sizes for publishing
- Time-based and size-based batching
- Batch compression options
- Atomic batch processing guarantees
- **Connection Pooling**
- Optional connection pools for high-throughput scenarios
- Configurable pool size and connection reuse
- Automatic pool health management
- Load balancing across connections
- **Memory Optimization**
- Zero-copy message processing where possible
- Configurable message buffering strategies
- Memory usage monitoring and alerts
- Automatic garbage collection tuning
### Benchmarking & Testing
- **Performance Benchmarks**
- Standardized performance test suite
- Throughput and latency measurements
- Memory usage profiling
- Comparison with other Rust AMQP libraries
## Version 1.5 - Extended Messaging Patterns (Q4 2026)
### Additional Patterns
- **Request-Response Pattern** (Simplified)
- Correlation ID-based request matching
- Timeout handling for responses
- Multiple response handling
- Load balancing for request handlers
- **Priority Queues**
- Message priority levels (1-255)
- Priority-based processing order
- Queue priority configuration
- Priority overflow handling
- **Message Deduplication**
- Content-based deduplication
- Time window deduplication
- Custom deduplication strategies
- Redis-backed deduplication store
### Integration Support
- **Framework Integrations**
- Axum/Warp HTTP server integration
- Tokio task integration helpers
- Serde serialization optimizations
- Custom deserializer support
## Version 2.0 - Cloud-Native Features (2027)
### Cloud Platform Support
- **Container Orchestration**
- Kubernetes deployment examples
- Docker Compose configurations
- Health check integrations
- Graceful shutdown handling
- **Service Discovery**
- Consul integration
- etcd support
- Kubernetes service discovery
- DNS-based discovery
- **Security Enhancements**
- TLS/SSL connection encryption
- SASL authentication mechanisms
- Certificate-based authentication
- Connection security auditing
### Multi-Protocol Support
- **Protocol Extensions**
- MQTT bridge support
- HTTP webhook publishing
- gRPC service integration
- WebSocket real-time streaming
## Version 2.1+ - Advanced Enterprise Features
### Enterprise Considerations
- **Message Transformation**
- Built-in message format converters
- Schema validation and evolution
- Content filtering and routing
- Message enrichment pipelines
- **Distributed Tracing**
- OpenTelemetry integration
- Jaeger/Zipkin support
- Correlation ID propagation
- Performance trace analysis
- **Administrative Tools**
- CLI management tools
- Queue inspection utilities
- Message replay capabilities
- Configuration management tools
## Principles for Future Development
### Core Values
1. **Simplicity First**: Every feature must have a simple, obvious use case
2. **Backward Compatibility**: Major versions will maintain API stability
3. **Performance Conscious**: Features should not significantly impact base performance
4. **Documentation Driven**: Every feature needs comprehensive documentation and examples
5. **Testing Required**: All features must have unit tests and integration examples
### Explicitly Out of Scope
- **Complex Event Sourcing**: Enterprise-grade event sourcing remains outside core library
- **Multi-Broker Support**: Focus remains on RabbitMQ exclusively
- **GUI Tools**: Command-line and programmatic interfaces only
- **Custom Protocol Implementation**: Stick to standard AMQP 0.9.1
## Community & Contribution
### Contribution Guidelines
- **RFC Process**: Major features require RFC discussion
- **Feature Flags**: New features should be behind feature flags initially
- **Benchmark Requirements**: Performance-impacting changes need benchmarks
- **Documentation First**: Features start with documentation, then implementation
### Communication Channels
- **GitHub Issues**: Bug reports and feature requests
- **GitHub Discussions**: Architecture discussions and questions
- **Documentation Examples**: Real-world usage examples and patterns
## Migration Path
### Upgrading from Complex Version
For users upgrading from the pre-1.0 complex version:
1. **Assessment Phase**: Identify which enterprise features you actually use
2. **Simplification**: Migrate to basic Publisher/Consumer patterns
3. **Retry Migration**: Convert complex retry logic to new retry configurations
4. **Testing**: Verify behavior with simplified APIs
5. **Performance Validation**: Ensure throughput meets requirements
### Migration Tools (Planned for v1.1)
- **Configuration Converter**: Tool to convert old configurations to new format
- **Feature Usage Analyzer**: Identify which enterprise features are actually used
- **Migration Guide**: Step-by-step migration instructions with examples
- **Compatibility Shims**: Temporary compatibility layer for gradual migration
## Release Schedule
### Estimated Timeline
- **v1.0**: Released (Simplified Foundation)
- **v1.1**: Released (Stability & Documentation)
- **v1.2.0**: Current (MassTransit & Advanced Retry)
- **v1.3**: Q2 2026 (Observability & Monitoring)
- **v1.4**: Q3 2026 (Performance Optimization)
- **v1.5**: Q4 2026 (Extended Patterns)
- **v2.0**: 2027 (Cloud-Native)
### Release Process
- **Monthly Patch Releases**: Bug fixes and minor improvements
- **Quarterly Minor Releases**: New features and enhancements
- **Yearly Major Releases**: Breaking changes and major new capabilities
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*This roadmap is a living document and will be updated based on community feedback, usage patterns, and emerging requirements. Priority and timeline adjustments will be made based on real-world usage and feedback.*
**Last Updated**: January 2026
**Next Review**: April 2026