Advanced Use Cases and Best Practices
While automatic batching covers most everyday situations, knowing a few additional techniques can be helpful:
- Forcing a Re-render: At times, you might need to force a re-render immediately, bypassing the batching mechanism. React provides the flushSync utility for this:
import { flushSync } from 'react-dom';
flushSync(() => {
setCount(count + 1);
});
Use `flushSync` judiciously, as it can negatively impact performance if overused.
- Understanding `useTransition`: React 18’s `useTransition` hook is designed for separating urgent and non-urgent updates. Urgent updates (like responding to direct user input) should proceed as normal, while non-urgent updates (like fetching secondary data) can be marked as transitions. Automatic batching works in conjunction with transitions to ensure smoother experiences.
What is Automatic Batching in React 18
React 18 includes great features including automatic batching, which enhances rendering effectiveness and results in significant gains for programmers and users.
This article is going to explain what batching is, how it worked before in React, and how our lives have been changed by automatic batching.
Table of Content
- What is Batching?
- Batching in React Before React 18
- What is Automatic Batching in React 18?
- Benefits of Automatic Batching
- Automatic Batching in Action
- When Automatic Batching Might Not Apply
- Advanced Use Cases and Best Practices
- Conclusion