In this article, we will delve "under the hood" of the React engine and see how node updates occur. At the same time, we will also explore the basic principles of memoization and its application in different types of components.

On the web, you can find a huge number of articles, manuals and books on the basics of React, including official documentation from the developers. In this article, we will not write Hello World and study well-known concepts. Today we will look under the hood of the library and try to understand how it works inside, how it stores data, and what its Virtual Tree actually looks like.