@jmkim85/dev-flow-mcp

# Design Specification - [Project Name] **Project**: [Project Name] **Date**: [Date] **Language**: [language] **Version**: 1.0 **Architecture**: [Monolithic/Microservices/Serverless] ## 📋 Document Overview This document provides the technical design specification for [Project Name]. It translates requirements into a concrete technical implementation plan. ## 🏗️ System Architecture ### High-Level Architecture ``` [Placeholder for architecture diagram] ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │ Presentation │ │ Business │ │ Data │ │ Layer │◄──►│ Logic │◄──►│ Layer │ │ │ │ Layer │ │ │ └─────────────────┘ └─────────────────┘ └─────────────────┘ ``` ### Architecture Patterns - **Pattern**: [MVC, MVP, MVVM, Clean Architecture, etc.] - **Rationale**: [Why this pattern was chosen] - **Benefits**: [Advantages for this project] - **Trade-offs**: [Known limitations or compromises] ### Technology Stack | Layer | Technology | Version | Rationale | |-------|------------|---------|-----------| | Frontend | [Framework] | [Version] | [Why chosen] | | Backend | [Framework] | [Version] | [Why chosen] | | Database | [Database] | [Version] | [Why chosen] | | Cache | [Cache System] | [Version] | [Why chosen] | | Message Queue | [Queue System] | [Version] | [Why chosen] | | Deployment | [Platform] | [Version] | [Why chosen] | ## 🔧 Component Design ### Core Components #### Component 1: [Component Name] - **Purpose**: [What this component does] - **Responsibilities**: - [ ] Responsibility 1 - [ ] Responsibility 2 - [ ] Responsibility 3 - **Interfaces**: [Public APIs, methods, events] - **Dependencies**: [Other components this depends on] - **Configuration**: [Required configuration parameters] #### Component 2: [Component Name] - **Purpose**: [What this component does] - **Responsibilities**: - [ ] Responsibility 1 - [ ] Responsibility 2 - [ ] Responsibility 3 - **Interfaces**: [Public APIs, methods, events] - **Dependencies**: [Other components this depends on] - **Configuration**: [Required configuration parameters] ### Component Interactions ``` [Placeholder for component interaction diagram] Component A ──request──► Component B │ │ │ ▼ └──────response◄─── Component C ``` ## 📊 Data Design ### Data Models #### Entity 1: [Entity Name] ```[language] // Example data structure { "id": "string (UUID)", "name": "string", "created_at": "timestamp", "updated_at": "timestamp", "status": "enum [active, inactive, pending]", "metadata": { "key": "value" } } ``` #### Entity 2: [Entity Name] ```[language] // Example data structure { "id": "string (UUID)", "title": "string", "description": "string", "priority": "number (1-10)", "tags": ["string"], "relationships": { "parent_id": "string (UUID)", "children": ["string (UUID)"] } } ``` ### Database Schema #### Tables/Collections | Table/Collection | Purpose | Key Fields | Relationships | |------------------|---------|------------|---------------| | [table_name] | [Purpose] | id, name, status | [Foreign keys] | | [table_name] | [Purpose] | id, title, user_id | [Foreign keys] | #### Indexes - **Primary Indexes**: [List primary keys and unique constraints] - **Secondary Indexes**: [List performance-critical indexes] - **Composite Indexes**: [Multi-column indexes for complex queries] ### Data Flow ``` [Placeholder for data flow diagram] User Input ──► Validation ──► Business Logic ──► Database │ │ └──────────── Response ◄─── Formatting ◄──────┘ ``` ## 🔌 API Design ### REST Endpoints #### Authentication ``` POST /api/auth/login POST /api/auth/logout POST /api/auth/refresh GET /api/auth/profile ``` #### Core Resources ``` GET /api/[resource] # List resources POST /api/[resource] # Create resource GET /api/[resource]/{id} # Get specific resource PUT /api/[resource]/{id} # Update resource DELETE /api/[resource]/{id} # Delete resource ``` ### Request/Response Formats #### Standard Response Format ```json { "success": boolean, "data": object | array, "message": "string", "errors": ["string"], "pagination": { "page": number, "limit": number, "total": number, "has_more": boolean } } ``` #### Error Response Format ```json { "success": false, "error": { "code": "ERROR_CODE", "message": "Human readable message", "details": "Additional error details", "timestamp": "ISO 8601 timestamp" } } ``` ## 🔒 Security Design ### Authentication & Authorization - **Authentication Method**: [JWT, OAuth, Session-based] - **Authorization Model**: [RBAC, ABAC, ACL] - **Token Management**: [Refresh tokens, expiration, revocation] - **Session Management**: [Storage, timeout, security] ### Data Protection - **Encryption at Rest**: [Database encryption, file encryption] - **Encryption in Transit**: [TLS/SSL, API security] - **Sensitive Data Handling**: [PII protection, data masking] - **Key Management**: [Key rotation, storage, access] ### Security Controls - **Input Validation**: [Sanitization, type checking, length limits] - **Output Encoding**: [XSS prevention, data escaping] - **Rate Limiting**: [API throttling, DDoS protection] - **Audit Logging**: [Security events, access logs] ## 📈 Performance Design ### Performance Requirements - **Response Time**: [Target response times for different operations] - **Throughput**: [Requests per second, concurrent users] - **Resource Usage**: [CPU, memory, disk, network limits] - **Scalability**: [Horizontal/vertical scaling approach] ### Optimization Strategies - **Caching**: [Redis, Memcached, CDN, browser caching] - **Database Optimization**: [Query optimization, indexing, partitioning] - **Code Optimization**: [Algorithm efficiency, resource pooling] - **Infrastructure**: [Load balancing, auto-scaling, CDN] ### Monitoring & Metrics - **Application Metrics**: [Response time, error rate, throughput] - **Infrastructure Metrics**: [CPU, memory, disk, network] - **Business Metrics**: [User engagement, conversion rates] - **Alerting**: [Threshold-based alerts, anomaly detection] ## 🚀 Deployment Design ### Environment Strategy - **Development**: [Local development setup] - **Testing**: [Staging environment configuration] - **Production**: [Production environment setup] - **Disaster Recovery**: [Backup and recovery procedures] ### Deployment Pipeline ``` Code Commit ──► Build ──► Test ──► Deploy to Staging ──► Deploy to Production │ │ │ └── Code Review ──► Security Scan ─────┘ │ │ Health Check ◄── Monitoring ◄── Rollback Strategy ◄─────────────┘ ``` ### Infrastructure as Code - **Configuration Management**: [Terraform, CloudFormation, Ansible] - **Container Strategy**: [Docker, Kubernetes, container registry] - **Service Mesh**: [Istio, Linkerd, service discovery] - **Secrets Management**: [Vault, AWS Secrets Manager, environment variables] ## 🧪 Testing Strategy ### Test Pyramid - **Unit Tests**: [Component-level testing, [test command]] - **Integration Tests**: [API testing, database testing] - **End-to-End Tests**: [User journey testing, UI testing] - **Performance Tests**: [Load testing, stress testing] ### Test Data Management - **Test Data Strategy**: [Synthetic data, anonymized production data] - **Data Refresh**: [How often test data is updated] - **Data Privacy**: [Ensuring no sensitive data in tests] ## 📋 Implementation Plan ### Development Phases #### Phase 1: Foundation (Weeks 1-2) - [ ] Set up development environment - [ ] Implement core data models - [ ] Set up basic authentication - [ ] Create project structure #### Phase 2: Core Features (Weeks 3-6) - [ ] Implement main business logic - [ ] Create API endpoints - [ ] Add data validation - [ ] Implement error handling #### Phase 3: Integration (Weeks 7-8) - [ ] Integrate external services - [ ] Add caching layer - [ ] Implement monitoring - [ ] Performance optimization #### Phase 4: Polish (Weeks 9-10) - [ ] UI/UX improvements - [ ] Security hardening - [ ] Documentation completion - [ ] Deployment preparation ### Risk Mitigation - **Technical Risks**: [Identified risks and mitigation strategies] - **Performance Risks**: [Scalability concerns and solutions] - **Security Risks**: [Security vulnerabilities and protections] - **Integration Risks**: [Third-party dependencies and alternatives] ## 📚 References ### Related Documents - [Requirements Document](requirements.md) - [Project Overview](../project_overview.md) - [API Documentation](api_docs.md) ### Technical References - [Framework Documentation] - [Best Practices Guides] - [Security Guidelines] - [Performance Benchmarks] --- **Document Status**: Draft/Review/Approved **Last Updated**: [Date] **Next Review**: [Date + 30 days] **Approved By**: [Name and Date]