Routes and Request Handling

When you build a web API, you need a way for clients (like a browser or mobile app) to send requests to specific functions on your server. This is where routes come in!

A route defines how a client's request URL (like /users or /products/1) maps to a particular action in your application code. It's like a street address for your API's functionalities.

Besides the URL, every request also uses an HTTP method, which tells the server what kind of action the client wants to perform. Common methods include:

• GET: Retrieve data (e.g., get a list of users).
• POST: Create new data (e.g., create a new user).
• PUT: Update existing data completely.
• PATCH: Partially update existing data.
• DELETE: Remove data.

NestJS uses decorators like @Get() or @Post() to link these methods to your controller functions.