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# PRD: Comprehensive Caching and Performance Optimization System **Created**: 2025-07-28 **Status**: Draft **Owner**: Viktor Farcic **Last Updated**: 2025-07-28 ## Executive Summary Implement intelligent caching to significantly improve response times and reduce computational overhead for production deployments and frequent usage. ## Documentation Changes ### Files Created/Updated - **`docs/performance-optimization-guide.md`** - New File - Complete guide for caching and performance features - **`docs/mcp-guide.md`** - MCP Documentation - Add cache management MCP tools - **`README.md`** - Project Overview - Add performance optimization to capabilities - **`src/core/cache/`** - Technical Implementation - Multi-layer caching system modules ### Content Location Map - **Feature Overview**: See `docs/performance-optimization-guide.md` (Section: "What is Performance Optimization") - **Caching Architecture**: See `docs/performance-optimization-guide.md` (Section: "Multi-Layer Caching") - **Setup Instructions**: See `docs/performance-optimization-guide.md` (Section: "Configuration") - **MCP Tools**: See `docs/mcp-guide.md` (Section: "Cache Management Tools") - **Examples**: See `docs/performance-optimization-guide.md` (Section: "Usage Examples") ### User Journey Validation - [ ] **Primary workflow** documented end-to-end: Configure cache → Use dot-ai → Experience improved performance - [ ] **Secondary workflows** have complete coverage: Cache management, monitoring, troubleshooting - [ ] **Cross-references** between performance docs and core usage docs work correctly - [ ] **Examples and commands** are testable via automated validation ## Implementation Requirements - [ ] **Core functionality**: Multi-layer cache architecture with intelligent cache keys - Documented in `docs/performance-optimization-guide.md` (Section: "Cache Architecture") - [ ] **User workflows**: Cache management and monitoring capabilities - Documented in `docs/mcp-guide.md` (Section: "Cache Management Tools") - [ ] **Performance optimization**: >70% improvement in response times for cached operations ### Success Criteria - [ ] **Discovery performance**: Cache hit reduces discovery from seconds to <50ms - [ ] **Cache effectiveness**: >90% cache hit rate for repeated operations - [ ] **Response improvement**: >70% improvement in CLI response times for cached operations - [ ] **Cache management**: Configurable durations with intuitive settings work reliably ## Implementation Progress ### Phase 1: Core Caching Architecture [Status: ⏳ PENDING] **Target**: Multi-layer caching with basic performance improvements **Implementation Tasks:** - [ ] Design CacheManager class with multi-store architecture (schemas/, discovery/, validation/, patterns/) - [ ] Implement intelligent cache key strategies with cluster isolation - [ ] Add configurable TTL system with plain English duration parsing - [ ] Create file-based persistence with atomic write operations ### Phase 2: Cache Management and Optimization [Status: ⏳ PENDING] **Target**: Advanced cache features with monitoring and management **Implementation Tasks:** - [ ] Build cache management and monitoring capabilities - [ ] Integrate with discovery engine, schema parser, memory system - [ ] Add CLI cache management commands - [ ] Implement MCP cache status interface ### Phase 3: Advanced Performance Features [Status: ⏳ PENDING] **Target**: Production-grade performance optimization **Implementation Tasks:** - [ ] Add performance monitoring and analytics - [ ] Implement cache warming and background refresh strategies - [ ] Create advanced cache optimization algorithms - [ ] Build cache cluster coordination for distributed scenarios ## Work Log ### 2025-07-28: PRD Refactoring to Documentation-First Format **Completed Work**: Refactored PRD #8 to follow new documentation-first guidelines with comprehensive caching and performance optimization features. --- ## Appendix ### Performance Targets - Discovery cache hit: <50ms response time - Schema cache hit: <10ms response time - Memory pattern cache hit: <25ms response time - Cache miss overhead: <100ms additional latency - Startup time improvement: >50% with warm cache