nest

Learn how to implement hybrid microservices in NestJS combining HTTP and TCP. Start your NestJS app, connect a TCP microservice, and launch them together seamlessly.

Debug your NestJS app efficiently with the Graph Inspector. Visualize and export your dependency graph to find circular dependencies and understand module wiring.

Learn to use the Fastify adapter in NestJS to boost performance. Install @nestjs/platform-fastify and switch from Express with our complete guide.

Learn to implement custom exception filters in NestJS. Create a class, use @Catch decorator, and handle errors effectively for better application management.

Discover how NestJS MetadataScanner uses prototype introspection and memoization to efficiently scan class inheritance chains for route discovery at startup. Learn its core functionality.

Learn to implement NestJS lifecycle hooks OnModuleInit and OnModuleDestroy. Execute custom logic on module initialization and before application shutdown.

Learn to set a global prefix for NestJS routes using app.setGlobalPrefix() in your bootstrap function. This guide explains prepend common path segments for all controllers with optional exclusions.

Learn to implement API versioning in NestJS using URI, header, and custom strategies. Master request routing for robust API management with this comprehensive guide.

Resolve circular dependencies in NestJS by implementing forwardRef() to defer class resolution and complete your module graph.

Master NestJS dependency injection using decorators like @Injectable() and @Inject(). Learn how NestJS uses metadata for automatic provider registration, token resolution, and scope management.

Understand NestJS modules and their IoC container architecture. Learn how the framework uses decorators and reflection to build a runtime graph for dependency resolution. Dive deep into ModuleRef and ModulesContainer.

Learn how to test NestJS applications using the official nest testing package. Discover how to create a testing module to compile configure and execute unit and E2E tests efficiently.