NestJS Guards and Interceptors Master NestJS guards and interceptors for implementing authentication, authorization, logging, and request/response transformation. Guards Fundamentals Understanding CanActivate and ExecutionContext. Authentication Guards JWT, session, and API key authentication patterns. Role-Based Authorization Guards RBAC patterns with decorators. Interceptors Fundamentals NestInterceptor and response transformation. Logging Interceptors Advanced logging patterns. Response Transformation Interceptors Shaping API responses consistently. Caching Interceptors Implementing cachin…