Join egghead, unlock knowledge.

Want more egghead?

This lesson is for members. Join us? Get access to all 3,000+ tutorials + a community with expert developers around the world.

Unlock This Lesson
Become a member
to unlock all features

Level Up!

Access all courses & lessons on egghead today and lock-in your price for life.


    Performantly Render a Large List of Items with React Context


    One tripping point with Context is that it will automatically re-render the subtree under a Provider whenever that Provider’s value changes, which can lead to performance problems if you aren’t careful. In this lesson you’ll learn what to watch out for, and a simple trick for avoiding unnecessary re-renders to keep your app running smoothly. You'll also learn how to use React.memo to optimize individual function components.