BadRequest Exception

If you want to validate & transform the incoming Data before they go into the routes, then you can use Pipes. Sample git repo: nest-pipes More information: pipes Class validator: class-validator Zod: Zod Transform & Validate Incoming Data 1.

Idempotency refers to an operation that can be performed multiple times without causing additional effects. In other words, no matter how many times the same action is repeated, the result will always be the same as if it had been executed only once. Idempotency ensures that the operation is only processed once, even if it's executed multiple times, preventing duplicate payments or unintended outcomes.

NestJS File Uploads to AWS S3 with Validation: A Comprehensive Guide Introduction File uploads are a common feature in many web applications. NestJS, a progressive Node.js framework, provides a convenient way to handle file uploads and integrate with cloud storage services like AWS S3. In this blog post, we'll explore how to implement file uploads with validation in NestJS and store the uploaded files on AWS S3. sample example i am showing here -- Prerequisites A NestJS project set up.