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React re-reselect: Better memoization and cache management

Blog post from LogRocket

Post Details
Company
Date Published
Author
Kasra Khosravi
Word Count
1,624
Language
-
Hacker News Points
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Summary

React applications often face performance issues due to excessive re-rendering of components, particularly as the application grows in complexity. While this may go unnoticed in smaller applications, it becomes problematic in larger ones, affecting both developers and users. To address this, developers use performance optimization libraries like re-reselect, which builds upon the Reselect library to enhance performance by creating memoized selectors that cache results, reducing unnecessary recalculations. This tutorial demonstrates the integration of re-reselect into a simple to-do list application, illustrating how selectors in React Redux can be optimized to only run when changes occur in the Redux store. The tutorial highlights the process of creating a selector with re-reselect to manage caches efficiently, ultimately improving app performance significantly.