Let's learn how to optimize our performance for long lists. The idea is to render only the visible rows, let's check how to do this in detail.

We will start learning how to test our applications with Cypress, this is a end-to-end testing framework for web test automation. We use this to test the application as a whole, instead of isolated components (cypress can do it, but RTL is better for unit testing), which is done using unit testing and integration testing when you want to make multiple components and layers work together