Claude MCP Server Ecosystem

# Session 03: Core Orchestration Components **Date:** January 20, 2025 **Session Focus:** Service Registry, Message Bus, and Resource Management **Phase:** 1 - Foundation, Week 3 ## Objectives - [ ] Implement Service Registry using etcd for centralized service management - [ ] Create Message Bus with Redis Streams for inter-service communication - [ ] Build Resource Management system for dynamic allocation and monitoring - [ ] Implement Service Discovery mechanisms for automatic service detection - [ ] Create orchestration server core with health monitoring and APIs - [ ] Establish workflow foundations for multi-service coordination ## Orchestration Architecture Design ### Service Registry Strategy Using etcd as the single source of truth for: - **Service Registration** - Automatic registration with health checks - **Configuration Management** - Centralized config with versioning - **Leader Election** - For distributed coordination - **Watch Capabilities** - Real-time service state changes ### Message Bus Architecture Redis Streams for: - **Event-Driven Communication** - Asynchronous service messaging - **Message Persistence** - Reliable delivery with replay capability - **Consumer Groups** - Load balancing and fault tolerance - **Dead Letter Queues** - Failed message handling ### Resource Management Design - **Dynamic Allocation** - CPU, memory, and connection limits per service - **Load Balancing** - Request distribution across service instances - **Circuit Breakers** - Fault tolerance and cascade failure prevention - **Metrics Collection** - Real-time performance monitoring ## Technical Implementation ### Service Registry Features - **Health Checks** - Periodic service health validation - **TTL Management** - Automatic cleanup of dead services - **Service Metadata** - Capabilities, versions, and configurations - **Notification System** - Real-time service state changes ### Message Bus Capabilities - **Guaranteed Delivery** - At-least-once message processing - **Message Ordering** - Sequential processing when required - **Fan-out Patterns** - Broadcast to multiple consumers - **Rate Limiting** - Message throughput controls ## Best Practices Applied - **High Availability** - Multi-node etcd cluster support - **Error Resilience** - Comprehensive retry and fallback strategies - **Performance** - Efficient connection pooling and caching - **Security** - Authentication, authorization, and encryption - **Observability** - Detailed metrics, logging, and tracing ## Session Progress - **Status:** Starting - **Current Task:** Service Registry with etcd implementation - **Next:** Message Bus with Redis Streams