How can you deploy NestJS applications as serverless functions?

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NestJS Interview Questions

  1. [JUNIOR] What is NestJS and why is it used for building server-side applications?
  2. [MID] How does Dependency Injection work in NestJS and what are its benefits?
  3. [JUNIOR] What are the main components of a NestJS application?
  4. [JUNIOR] What are providers in NestJS?
  5. [JUNIOR] What are pipes in NestJS?
  6. [JUNIOR] What are guards in NestJS?
  7. [MID] How can you validate incoming requests in NestJS?
  8. [MID] What is the difference between interceptors and middleware in NestJS?
  9. [MID] How can you handle errors and exceptions in NestJS?
  10. [SENIOR] How can you implement authentication and authorization using JWT in NestJS?
  11. [JUNIOR] What is middleware in NestJS?
  12. [JUNIOR] What is an interceptor in NestJS?
  13. [JUNIOR] What are decorators and what is their role in NestJS?
  14. [JUNIOR] What is the difference between NestJS and Express.js?
  15. [JUNIOR] What are DTOs (Data Transfer Objects) in NestJS?
  16. [MID] What are custom providers and how do they differ from standard providers?
  17. [MID] How does NestJS support authentication using Passport.js?
  18. [MID] How can you generate API documentation using Swagger in NestJS?
  19. [MID] How does NestJS handle database interactions with TypeORM?
  20. [MID] What is the difference between @Injectable() and @Inject() decorators?
  21. [MID] What are Exception Filters in NestJS and how do you use them?
  22. [MID] What are Validation Pipes and how do you use them in NestJS?
  23. [MID] How do you configure environment variables using the @nestjs/config module?
  24. [SENIOR] What are dynamic modules in NestJS and when would you use them?
  25. [SENIOR] How do you implement role-based authorization using Guards in NestJS?
  26. [SENIOR] How can you handle database transactions in NestJS?
  27. [SENIOR] How does the NestJS Microservices module work and when would you use it?
  28. [EXPERT] How does the NestJS request lifecycle process a request through middleware, guards, interceptors, pipes, and exception filters?
  29. [JUNIOR] How do you declare a class as a controller in NestJS?
  30. [JUNIOR] What are the benefits of using TypeScript in NestJS?
  31. [MID] How can you handle asynchronous operations in NestJS?
  32. [MID] How can you implement custom decorators in NestJS?
  33. [MID] How does NestJS handle CORS (Cross-Origin Resource Sharing)?
  34. [MID] What is the purpose of the ExecutionContext in NestJS?
  35. [MID] What is the difference between providers and services in NestJS?
  36. [SENIOR] How can you implement caching in NestJS?
  37. [SENIOR] How can you implement rate limiting in NestJS applications?
  38. [SENIOR] What is circular dependency in NestJS and how can it be resolved?
  39. [SENIOR] How can you implement versioning in NestJS APIs?
  40. [SENIOR] How can you implement WebSocket communication in NestJS?
  41. [SENIOR] How can you optimize the performance of a NestJS application?
  42. [SENIOR] How can you secure a NestJS application against common vulnerabilities?
  43. [JUNIOR] What is the role of the @Body() decorator in NestJS?
  44. [JUNIOR] What is the purpose of the NestJS CLI?
  45. [MID] How can you use route parameters in a NestJS controller?
  46. [MID] What is the concept of Serialization and Deserialization in NestJS?
  47. [MID] What is the difference between synchronous and asynchronous providers in NestJS?
  48. [MID] What is the difference between dependency injection and inversion of control (IoC)?
  49. [MID] How can you handle file uploads in NestJS?
  50. [MID] How can you configure NestJS to use Fastify instead of Express?
  51. [MID] What is the purpose of the @InjectRepository() decorator in NestJS?
  52. [SENIOR] How do you implement database migrations using TypeORM in NestJS?
  53. [SENIOR] How can you schedule tasks and cron jobs in NestJS?
  54. [SENIOR] How can you implement pagination and sorting in NestJS APIs?
  55. [SENIOR] How do you implement health checks and graceful shutdown in NestJS?
  56. [SENIOR] How can you implement request logging and tracing in NestJS applications?
  57. [EXPERT] How does the NestJS IoC container resolve the dependency graph at application bootstrap?
  58. [EXPERT] What is the CQRS pattern and how does the @nestjs/cqrs package implement it in NestJS?
  59. [JUNIOR] What is the entry file of a NestJS application?
  60. [MID] How does the NestJS logger differ from the standard console.log()?
  61. [SENIOR] How can you implement soft deletes in NestJS using TypeORM?
  62. [SENIOR] How can you implement database pooling in NestJS applications?
  63. [SENIOR] How can you deploy NestJS applications as serverless functions?
  64. [EXPERT] How would you implement the Saga pattern for distributed transactions in a NestJS microservices architecture?
  65. [EXPERT] How does NestJS support GraphQL Federation for a federated microservices architecture?
  66. [EXPERT] How would you implement Event Sourcing in NestJS for complex business domains?
  67. [EXPERT] How can you implement multi-tenant architecture with dynamic modules in NestJS?
  68. [EXPERT] How would you design a circuit breaker pattern in a NestJS microservices ecosystem?
  69. [EXPERT] How can you implement real-time data synchronization between multiple clients using WebSockets in NestJS?
  70. [EXPERT] How would you handle backpressure and message queue overflow in NestJS microservices?