Hands-On Introduction to Backend Development with NestJS

Explore the NestJS project structure in src, including modules, controllers, and services, wired by dependency injection and bootstrap. Create a simple /get route to see reloading and responses.

Generate a products resource with the nest cli to scaffold a module, controller, and service inside the Next.js app, updating app module and package.json for a modular rest API.

Build real routes in a NestJS backend by implementing in-memory products, handling route and query parameters to fetch all products, a product by id, and by min price.

Implement a post /products endpoint in NestJS using a create product DTO with name and price validation, uuid generation, and a whitelist validation pipe to add products.

Master patch and delete operations in NestJS by building an update product DTO with optional fields, validating input, and returning a 204 no content on deletion.

Apply global validation pipes for transforming and validating DTO data, implement middleware that logs requests before routes, and use an API key guard to authorize access via x-api-key.

Configure a NestJS app with dot env and the config module to read environment variables, set the port, and log with the NestJS logger, plus explore spec tests.

Celebrate completing this hands-on NestJS course and solidify your foundation in building scalable backend applications, with guidance on connecting to a real database, implementing enhanced authentication, and testing.