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API Endpoints

The BookWorm application implements a sophisticated endpoint management system that provides consistent API design, automatic registration, and standardized response patterns across all microservices.

Endpoint Architecture​

Minimal APIs Pattern​

  • IEndpoint Interface - Standardized endpoint contract
  • Automatic Discovery - Assembly scanning for endpoint registration
  • Route Builder Extensions - Fluent API for endpoint configuration
  • Dependency Injection - Full DI support for endpoint handlers

Endpoint Registration​

  • Assembly Scanning - Automatic endpoint discovery and registration
  • Transient Lifetime - Lightweight endpoint instance management
  • Type-Safe Registration - Compile-time safety for endpoint definitions
  • Conditional Registration - Environment-specific endpoint availability

API Versioning​

Version Management​

  • API Version Sets - Centralized version configuration
  • URL Path Versioning - Version specification in API paths (/api/v1/, /api/v2/)
  • Asp.Versioning Integration - Industry-standard versioning framework
  • Backward Compatibility - Support for multiple API versions simultaneously

Version Strategy​

  • Semantic Versioning - Clear version numbering scheme
  • Deprecation Policy - Graceful deprecation of older API versions
  • Documentation Versioning - Version-specific API documentation
  • Client Migration - Tools and guidance for API version migration

Response Standardization​

HTTP Status Codes​

  • POST Operations - 201 Created with location header
  • PUT Operations - 200 OK or 204 No Content
  • DELETE Operations - 204 No Content
  • GET Operations - 200 OK with data
  • PATCH Operations - 200 OK with updated data

Error Response Format​

  • Problem Details (RFC 7807) - Standardized error response format
  • Validation Problems - Structured validation error responses
  • Not Found Responses - Consistent 404 error handling
  • Conflict Responses - Business rule violation responses

Response Extensions​

  • ProducesPost<T>() - Standardized POST response configuration
  • ProducesGet<T>() - GET response with optional validation and not found handling
  • ProducesPut() - PUT operation response patterns
  • ProducesDelete() - DELETE operation response configuration
  • ProducesPatch<T>() - PATCH operation with validation support

Security Integration​

Authentication​

  • JWT Bearer Tokens - Token-based authentication for API endpoints
  • Claims-Based Authorization - Fine-grained access control
  • Role-Based Security - Role-based endpoint protection
  • Anonymous Access - Selective public endpoint access

Anti-Forgery Protection​

  • Development Environment - Disabled for development flexibility
  • Production Environment - Enabled for CSRF protection
  • Token Validation - Automatic anti-forgery token verification
  • Custom Token Handling - Configurable token validation logic

Development Features​

Development-Specific Features​

  • Anti-Forgery Disabled - Simplified development workflow
  • Enhanced Logging - Detailed endpoint execution logging
  • Error Details - Full exception details in development responses
  • Hot Reload Support - Dynamic endpoint changes without restart

Debugging Support​

  • Request/Response Logging - Comprehensive API call logging
  • Performance Monitoring - Endpoint execution time tracking
  • Health Check Integration - Endpoint health status monitoring
  • Metrics Collection - API usage and performance metrics

Resource Management​

Route Organization​

  • Resource-Based Routing - Logical grouping by business domain
  • Nested Resources - Hierarchical resource relationships
  • Query Parameter Handling - Standardized query parameter processing
  • Route Constraints - Type-safe route parameter validation

Content Negotiation​

  • Media Type Support - JSON, XML, and other content types
  • Accept Header Processing - Client-driven content type selection
  • Custom Formatters - Support for domain-specific data formats
  • Compression Support - Response compression for performance

Performance Optimization​

Endpoint Performance​

  • Minimal Overhead - Lightweight endpoint execution
  • Async/Await Patterns - Non-blocking endpoint handlers
  • Result Caching - Response caching where appropriate
  • Connection Pooling - Efficient resource utilization

Scalability Features​

  • Stateless Design - No server-side session state
  • Load Balancer Friendly - Compatible with load balancing strategies
  • Circuit Breaker Integration - Resilience for external dependencies
  • Timeout Configuration - Request timeout management

Best Practices​

Endpoint Design​

  • RESTful Principles - Follow REST architectural constraints
  • Idempotency - Safe retry behavior for appropriate operations
  • Resource Naming - Clear, consistent resource naming conventions
  • HTTP Method Semantics - Proper use of HTTP methods

Documentation​

  • OpenAPI Integration - Automatic API documentation generation
  • Example Requests - Sample requests and responses
  • Parameter Documentation - Clear parameter descriptions
  • Error Code Documentation - Comprehensive error code reference

Testing​

  • Integration Tests - End-to-end API testing
  • Contract Testing - API contract validation
  • Load Testing - Performance and scalability testing
  • Security Testing - Vulnerability assessment and penetration testing