Product Management
Overview
This directory contains comprehensive documentation for the Product Management module of the Bee O'clock panel service. The product management system handles the complete lifecycle of products and their associated tags, including creation, updates, status management, image management, and categorization within the multi-tenant SaaS platform.
Documentation Structure
Complete REST API reference including all endpoints, request/response schemas, authentication requirements, and usage examples for product and tag management operations.
Key Topics Covered:
Product CRUD operations with comprehensive validation
Paginated product listing with advanced filtering and search
Product tag management with categorization support
Product image upload and management operations
Comprehensive data schemas and validation rules
Error handling and business rule enforcement
Performance optimization and monitoring guidelines
Rate limiting and security considerations
Detailed documentation of TypeScript interfaces, DTOs, enums, and contracts used throughout the product management module.
Key Topics Covered:
Data Transfer Objects (DTOs) with validation constraints
Domain interfaces and entity definitions
Enum definitions and business constants
Type definitions and utility types
Validation constraints and business rules
Repository contracts and specifications
Use case parameter interfaces
Media and file handling interfaces
Business logic and use case implementations following Clean Architecture principles and CQRS pattern with comprehensive permission validation.
Key Topics Covered:
Core business use cases with permission validation
CQRS pattern implementation with command/query separation
Error handling strategies and exception management
Event publishing and system integration patterns
Performance considerations and optimization strategies
Business rule enforcement and validation logic
Multi-tenant security and data isolation
MongoDB schema definitions, relationships, indexes, and data integrity rules for the product management module.
Key Topics Covered:
Entity schemas and sub-document structures
Index strategies and query optimization
Multi-tenancy support and data isolation
Data validation and business constraints
Audit trail and state history tracking
Performance optimization and monitoring
Backup and recovery strategies
Module Architecture
Technology Stack
Framework: NestJS with TypeScript
Database: MongoDB with Mongoose ODM
Architecture: Clean Architecture + CQRS + DDD
Patterns: Repository Pattern, Command Pattern, Event-Driven Architecture
File Storage: CDN integration for image management
Caching: Redis for performance optimization
Search: MongoDB text indexes with full-text search capabilities
Monitoring: Comprehensive logging and metrics
Core Features
Product Lifecycle Management
Comprehensive product creation with multi-language support
Advanced update workflows with change tracking and audit trails
SKU-based identification with uniqueness validation
Soft deletion with dependency checking and data preservation
Multi-language content management with validation
Product Categorization
Tag-based categorization system with hierarchical support
Advanced filtering and search capabilities
Tag management with usage tracking and validation
Bulk tag operations with performance optimization
Tag-based product discovery and organization
Image Management
Multi-image support with CDN integration
Automatic image optimization and thumbnail generation
File type validation and size constraints
Image metadata extraction and storage
Progressive loading and responsive image delivery
Advanced Search and Filtering
Full-text search across multiple language versions
Tag-based filtering with complex boolean logic
Price range filtering with currency conversion
Sorting by multiple criteria (name, price, date, popularity)
Pagination with efficient cursor-based navigation
Multi-Language Support
Comprehensive internationalization with language-specific content
Title and description localization with validation
Language-specific search and filtering capabilities
Content management with translation workflow support
Fallback language handling for missing translations
Multi-Tenant Architecture
Complete tenant data isolation with security validation
Tenant-specific business rule configuration
Scalable database partitioning strategies
Performance optimization per tenant size and usage patterns
Cross-tenant analytics and reporting capabilities
Business Rules
Product Creation
SKU Uniqueness: Product SKU must be unique within the tenant scope
Language Requirements: At least one language version is mandatory for all products
Price Validation: Price must be positive with valid currency from supported list
Tag Validation: All assigned tags must exist in the product tag collection
Image Constraints: Maximum 10 images per product with size and format validation
Product Updates
SKU Immutability: Product SKU cannot be changed after initial creation
Language Preservation: Cannot remove all language versions from a product
Price History: All price changes are tracked for audit and compliance purposes
Tag Synchronization: Tag updates propagate to all products using those tags
Permission Validation: User must have appropriate permissions for update scope
Product Deletion
Soft Deletion: Products are marked as deleted rather than physically removed
Dependency Validation: Cannot delete products referenced in active orders or reservations
Cascade Management: Related images and references are properly handled during deletion
Data Preservation: All historical data maintained for compliance and audit requirements
Cleanup Coordination: Automatic cleanup of related resources and cache invalidation
Tag Management
Name Uniqueness: Tag names must be unique within tenant with case-insensitive comparison
Usage Tracking: Cannot delete tags currently assigned to active products
Character Validation: Tag names must follow specific character and length constraints
Bulk Operations: Support for efficient bulk tag creation and management operations
Reference Integrity: Maintain referential integrity between products and tags
Image Management
File Format Validation: Only JPEG, PNG, and WebP formats are supported
Size Constraints: Maximum 5MB per image with automatic optimization
Dimension Validation: Reasonable minimum and maximum pixel dimensions
Count Limits: Maximum 10 images per product with efficient storage
CDN Integration: Automatic upload to CDN with global distribution
Permission Management
Role-Based Access: Different permission levels for different user roles and responsibilities
Operation-Specific Permissions: Granular permissions for create, read, update, delete operations
Tenant Isolation: Complete data isolation between different tenants with security validation
Audit Logging: All access attempts and changes are logged for security and compliance
Permission Inheritance: Logical permission hierarchy with inheritance rules
API Integration Examples
Creating a Multi-Language Product
Advanced Product Search with Filters
Bulk Image Upload Workflow
Product Tag Management
Performance Metrics
Key Performance Indicators
Product creation/update response times with detailed performance tracking
Search and filtering query performance with optimization recommendations
Database query performance analysis with slow query identification
Image upload and processing times with CDN distribution metrics
Cache hit rates and effectiveness measurement across different data types
Error rate monitoring and categorization for business and technical issues
Monitoring and Alerting
Real-time API endpoint response time monitoring with SLA tracking
Database performance and query analysis with automated optimization suggestions
Image processing and CDN performance tracking with global distribution metrics
Cache performance and hit rate tracking with capacity planning recommendations
Comprehensive error rate monitoring with intelligent alerting and escalation procedures
Scalability Considerations
Horizontal Scaling
Stateless service design for easy horizontal scaling across multiple instances
Database sharding strategies for large product catalogs with tenant-based partitioning
Distributed caching for multi-instance deployment with consistency guarantees
Load balancing for API endpoints with intelligent request routing and failover
Microservice-ready architecture with clear service boundaries and communication patterns
Vertical Scaling
Database optimization and indexing with continuous performance monitoring
Query performance tuning with automated query plan analysis and recommendations
Memory usage optimization with efficient data structures and caching strategies
CPU-intensive operation optimization with async processing and intelligent batching
Storage efficiency improvements with data compression and intelligent archival strategies
Integration Patterns
Event-Driven Integration
Product Lifecycle Events: Creation, updates, and deletion events for system integration
Tag Management Events: Tag creation, updates, and usage tracking for analytics
Image Processing Events: Upload, optimization, and deletion events for media workflows
Search Index Events: Automatic search index updates for improved discoverability
Audit Events: Comprehensive audit trail events for compliance and monitoring
Cache Integration
Product Data Caching: Frequently accessed products cached with intelligent invalidation
Search Result Caching: Common search queries cached with automatic refresh
Tag Data Caching: Tag collections heavily cached due to infrequent changes
Image URL Caching: CDN URLs cached for fast access with proper expiration
Metadata Caching: Product metadata cached for dashboard and analytics
External Service Integration
CDN Services: Image storage and delivery with global distribution
Search Services: External search engines for advanced full-text search capabilities
Analytics Services: Product performance and usage analytics integration
Notification Services: Product-related notifications and customer communication
Payment Services: Product pricing integration with payment processing systems
Security Considerations
Data Protection
Input Validation: Comprehensive validation of all input data with sanitization
Access Control: Role-based permission system with granular operation control
Tenant Isolation: Complete data isolation between tenants with security validation
Audit Logging: All access attempts and changes logged for security monitoring
Data Encryption: Sensitive data encrypted in transit and at rest
File Security
Upload Validation: Comprehensive file type, size, and content validation
Virus Scanning: Automatic virus scanning for all uploaded files
CDN Security: Secure file storage with access controls and monitoring
Content Filtering: Inappropriate content detection and filtering
Access Logging: All file access attempts logged for security monitoring
API Security
Authentication: Bearer token authentication with proper validation
Authorization: Role-based access control with operation-specific permissions
Rate Limiting: Intelligent rate limiting with abuse prevention
Input Sanitization: XSS and injection attack prevention
CORS Configuration: Proper cross-origin resource sharing configuration
Development Guidelines
Testing Strategy
Unit Tests: Business logic validation and domain rule enforcement with high coverage
Integration Tests: Database operations and external service integration with realistic scenarios
E2E Tests: Complete product workflow validation from creation to deletion
Performance Tests: Load testing and scalability validation under realistic load conditions
Security Tests: Permission validation and data isolation verification with penetration testing
Error Handling
Domain-specific exceptions with clear error codes and user-friendly messages
Consistent error response format across all endpoints with detailed context
Proper HTTP status codes for different error categories and business scenarios
Comprehensive logging for debugging and monitoring with correlation IDs and context
Graceful degradation for non-critical failures with appropriate fallback mechanisms
Code Quality Standards
TypeScript strict mode compliance with comprehensive type safety
ESLint and Prettier configuration with automated formatting and linting
Comprehensive test coverage requirements with minimum thresholds and quality gates
Clean Architecture principles adherence with clear layer separation and dependencies
Domain-Driven Design patterns with rich domain models and proper encapsulation
Deployment and Operations
Deployment Strategy
Blue-Green Deployment: Zero downtime deployments with automatic health checks
Database Migrations: Schema evolution with backwards compatibility and rollback procedures
Feature Flags: Gradual feature rollouts with real-time monitoring and instant rollback
Environment Management: Consistent environments across development, staging, and production
Health Monitoring: Comprehensive health checks with automated failure detection and recovery
Monitoring and Observability
Application Metrics: Business and technical metrics with real-time dashboards
Performance Monitoring: Response time, throughput, and resource utilization tracking
Error Tracking: Comprehensive error tracking with automatic categorization and alerting
Business Intelligence: Product usage analytics and performance insights
Infrastructure Monitoring: Database, cache, and CDN performance monitoring
Backup and Disaster Recovery
Automated Backups: Regular automated backups with verification and testing
Point-in-Time Recovery: Database point-in-time recovery with minimal data loss
Cross-Region Replication: Geographic distribution for disaster recovery
Recovery Testing: Regular disaster recovery testing with documented procedures
Data Integrity: Continuous data integrity monitoring with automatic correction
Future Enhancements
Planned Features
AI-Powered Recommendations: Intelligent product recommendations based on user behavior and preferences
Advanced Analytics: Comprehensive business intelligence with predictive analytics and insights
Bulk Operations: Enhanced bulk import/export capabilities with validation and error handling
API Versioning: Comprehensive API versioning strategy with backwards compatibility
Mobile Optimization: Enhanced mobile API support with offline capabilities and synchronization
Technical Improvements
GraphQL API: Enhanced query capabilities with client-specific data fetching optimization
Event Sourcing: Complete audit trail with event replay capabilities for compliance
Microservice Architecture: Split into focused microservices with clear boundaries and contracts
Advanced Search: Elasticsearch integration for complex search and analytics capabilities
Real-time Updates: WebSocket integration for live product updates and notifications
Troubleshooting Guide
Common Issues
Product Creation Failures: Validation errors, SKU conflicts, and resolution strategies
Permission Denied Errors: Access control troubleshooting and permission verification procedures
Image Upload Issues: File validation problems, CDN integration failures, and workarounds
Performance Issues: Query optimization, caching improvements, and resource scaling strategies
Integration Failures: External service communication problems and fallback mechanisms
Debugging Tools
Structured error messages with correlation IDs for request tracing across services
Comprehensive logging with request context and business operation tracking
Database query analysis tools with performance profiling and optimization recommendations
Cache inspection utilities with hit rate monitoring and eviction tracking
Performance profiling tools with bottleneck identification and optimization suggestions
Support Resources
Comprehensive API documentation with interactive examples and real-world use cases
Error code reference guide with resolution strategies and best practices
Performance optimization guide with specific recommendations and benchmarks
Best practices documentation with coding standards and architectural guidelines
Community forums and support channels with expert assistance and knowledge sharing
Contributing Guidelines
Code Standards
TypeScript strict mode compliance with comprehensive type safety and error handling
ESLint and Prettier configuration with automated formatting and linting rules
Comprehensive test coverage requirements with minimum thresholds and quality gates
Clean Architecture principles adherence with clear layer separation and dependency rules
Domain-Driven Design patterns with rich domain models and proper encapsulation
Documentation Requirements
Update documentation with all code changes and new features
Include comprehensive API examples with real-world use cases and edge cases
Maintain schema documentation accuracy with automated validation and verification
Document business rule changes with impact analysis and migration guides
Provide migration guides for breaking changes with step-by-step instructions
Review Process
Mandatory code review for all changes with multiple reviewer approval
Testing validation and coverage verification with automated quality gates
Documentation update validation with completeness checking and accuracy verification
Performance impact assessment with benchmarking requirements and thresholds
Security review for sensitive changes with threat modeling and penetration testing
This comprehensive documentation provides developers, architects, and stakeholders with everything needed to understand, maintain, extend, and operate the Product Management module effectively and efficiently.
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