Benchmark: memo vs no-memo vs incorrect- memo 17 prod

HTML Preparation code:

<div id="root"></div>

<script crossorigin src="https://unpkg.com/react@17/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"></script>

Script Preparation code:



var NoMemo = function({children}) {
  return React.createElement("div", { children: children });
}

var Memo = React.memo(NoMemo)

var StringChild = function () {return 'children'}

var DivChild = function () {
  return React.createElement('div', {}, 'children', ' in ', ' div');
}
var root = document.getElementById('root');

Tests:

NoMemo - string child
ReactDOM.render(React.createElement(NoMemo, {}, StringChild()), root);
Memo - string child
ReactDOM.render(React.createElement(Memo, {}, StringChild()), root);
Memo - instance child
ReactDOM.render(React.createElement(Memo, {}, DivChild()), root);
NoMemo - instance child
ReactDOM.render(React.createElement(NoMemo, {}, DivChild()), root);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
NoMemo - string child
Memo - string child
Memo - instance child
NoMemo - instance child

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

The provided JSON represents a benchmarking test for React.js, specifically comparing the performance of memoized and non-memoized components.

**Memoization vs Non-Memoization**

In this context, memoization refers to the optimization technique where the result of a computationally expensive function is cached so that it can be reused instead of recalculated every time it's needed. In React, memoization is achieved through the use of `React.memo()` or other higher-order components (HOCs) like `NoMemo`.

**Options Compared**

The benchmark tests two types of components:

1. **Non-memoized (`NoMemo`)**: This component is not optimized for performance and recalculates its child elements on every render.
2. **Memoized (`Memo`)**: This component uses memoization to cache the result of its child elements, reducing unnecessary recalculations.

**Pros and Cons**

* **Non-memoized (`NoMemo`)**:
	+ Pros: Simple implementation, easy to understand.
	+ Cons: Inefficient for large or complex components, leading to slow performance.
* **Memoized (`Memo`)**:
	+ Pros: Improved performance by caching results, reducing unnecessary calculations.
	+ Cons: More complex implementation, requires careful consideration of cache invalidation.

**Library and Purpose**

The `React` library is a JavaScript framework for building user interfaces. The `React.memo()` function is a higher-order component (HOC) that wraps another component to memoize its props and re-render only when the props change.

In this benchmark, `Memo` is used to wrap the `NoMemo` component, enabling memoization.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax mentioned in this benchmark. However, it's worth noting that React uses a specific syntax for JSX (JavaScript XML), which allows developers to write HTML-like code in their JavaScript files.

**Other Alternatives**

If you're looking for alternative ways to improve performance in React components, consider the following:

1. **Server-side rendering**: Render components on the server instead of the client, reducing initial load times.
2. **Code splitting**: Split large bundles into smaller chunks and load them only when needed, reducing initial payload size.
3. **Optimized component tree**: Use techniques like lazy loading or caching to optimize component tree construction.

Keep in mind that these alternatives may introduce additional complexity, so it's essential to weigh the benefits against the costs before implementing them.

Related benchmarks:

memo vs no-memo vs incorrect- memo 17 prod (version: 0)

Comparing performance of: NoMemo - string child vs Memo - string child vs Memo - instance child vs NoMemo - instance child

Created: 5 years ago by: Registered User

Jump to the latest result

NoMemo - string child

Memo - string child

Memo - instance child

NoMemo - instance child

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):