What Happens When You Cancel an HTTP Request?

With reactive libraries like RxJS, we got used to easily cancel requests on client side... but what really happens on the back-end? Is the request really canceled? Did we really improve the app’s performance and reduce cloud costs? Or did we just trigger some crazy chaos?

Let's dig deeper into how request cancellation works from the front-end to the back-end and how we can leverage reactive frameworks and libraries like Angular, RxJS and NestJS to boost performance and reduce costs from the front-end to the database with some reactive programming.