MCP Memory Service

# v8.61.0 - MILESTONE: Phase 3 Complete - Major Complexity Reduction Achievement ## 🏆 MILESTONE ACHIEVED This release marks the successful completion of **Phase 3** of the complexity reduction initiative, achieving **ALL D-level and E-level function refactoring** across 4 comprehensive phases. ## 📊 Overall Impact | Metric | Achievement | |--------|-------------| | **Functions Refactored** | 4 (1 E-level + 3 D-level) | | **Average Complexity Reduction** | **75.2%** | | **Code Quality Grade** | 75% A-grade (4-5), 25% B-grade (7-8) | | **Lines Reduced** | 400+ from handlers | | **New Utility Code** | 896 lines (4 modules) | | **Security Regressions** | 0 | | **Performance Impact** | None | ## 🎯 Phase Breakdown ### Phase 3.1: Health Check Strategy Pattern - **Function**: `handle_check_database_health` - **Complexity**: E (35) → B (7-8) - **78% reduction** - **Module**: `utils/health_check.py` (262 lines) - **Components**: 5 strategy classes + factory pattern - **Impact**: utility.py reduced from 356 → 174 lines (-51%) ### Phase 3.2: Startup Orchestrator Pattern ⭐ - **Function**: `async_main` - **Complexity**: D (23) → A (4) - **82.6% reduction** ← BEST ACHIEVEMENT - **Module**: `utils/startup_orchestrator.py` (226 lines) - **Components**: 3 orchestrator classes (A/2, B/6, A/4) - **Impact**: server_impl.py reduced from 144 → 38 lines (-74%) ### Phase 3.3: Directory Ingestion Processor Pattern - **Function**: `handle_ingest_directory` - **Complexity**: D (22) → B (8) - **64% reduction** - **Module**: `utils/directory_ingestion.py` (229 lines) - **Components**: 3 processor classes for file discovery, processing, formatting - **Impact**: documents.py reduced from 151 → 87 lines (-42%) - **Documentation**: Comprehensive analysis report in `docs/refactoring/phase-3-3-analysis.md` ### Phase 3.4: Quality Analytics Analyzer Pattern ⭐ - **Function**: `handle_analyze_quality_distribution` - **Complexity**: D (21) → A (5) - **76% reduction** ← EXCEPTIONAL - **Module**: `utils/quality_analytics.py` (221 lines) - **Components**: 3 analyzer classes for statistics, ranking, reporting - **Impact**: quality.py reduced from 111 → 63 lines (-43%) ## 🏗️ New Architecture ### 4 New Utility Modules Created 1. **`utils/health_check.py`** (262 lines) - Backend health check strategies - Strategy pattern implementation - Independent backend testing 2. **`utils/startup_orchestrator.py`** (226 lines) - Server startup orchestration - Retry management with timeout - Execution mode handling 3. **`utils/directory_ingestion.py`** (229 lines) - Directory file discovery and filtering - Individual file processing with statistics - Result message formatting 4. **`utils/quality_analytics.py`** (221 lines) - Quality distribution analysis - Top/bottom ranking logic - Report formatting and presentation ## ✅ Quality Assurance ### Code Quality Metrics - **Before Phase 3**: 1 E-level + 3 D-level functions (high-risk) - **After Phase 3**: ALL functions B-grade or better - **75% A-grade** (complexity 4-5) - **25% B-grade** (complexity 7-8) - **Target**: B (<10) complexity - **Result**: EXCEEDED TARGET - 75% now A-grade ### Validation Results - ✅ code-quality-guard: **APPROVED FOR MERGE** on all 4 phases - ✅ Security: **0 new vulnerabilities** across all phases - ✅ Maintainability: **Significantly improved** with design patterns - ✅ Testability: Each component **independently testable** - ✅ Performance: **No regression** across all phases ## 📚 Design Patterns Applied 1. **Strategy Pattern** (Phase 3.1) - Backend-specific health checks 2. **Orchestrator Pattern** (Phase 3.2) - Server startup coordination 3. **Processor Pattern** (Phase 3.3) - File ingestion pipeline 4. **Analyzer Pattern** (Phase 3.4) - Quality analytics ## 📝 Documentation Updates - ✅ **CHANGELOG.md**: Comprehensive Phase 3 section with all 4 phases - ✅ **README.md**: Updated Latest Release with milestone highlights - ✅ **CLAUDE.md**: Updated version reference with achievements - ✅ **docs/refactoring/phase-3-3-analysis.md**: Detailed Phase 3.3 analysis ## 🔗 Related Issues - Completes #297 (Phase 3 - Complexity Reduction) - Part of multi-phase server refactoring initiative: - Phase 1: v8.56.0 (Server architecture foundation) - Phase 2: v8.59.0 (Handler extraction) - **Phase 3: v8.61.0 (Complexity reduction)** ← This Release ## 🚀 Installation ```bash pip install mcp-memory-service==8.61.0 ``` Or via uvx: ```bash uvx mcp-memory-service@8.61.0 ``` --- **This is a significant architectural milestone demonstrating commitment to code quality, maintainability, and sustainable development practices.** See [CHANGELOG.md](CHANGELOG.md) for complete version history. 🤖 Generated with [Claude Code](https://claude.com/claude-code)