Benchmark: Memoization + useCallback

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.production.min.js"></script>
<div id="root"></div>

Script Preparation code:

function ComponentWithInlineFunctionAndNonMemoizedButton() {
    const [state, setState] = React.useState(0);
    const clickMe = evt => {
        evt.preventDefault();
        setState(function(existingState){
          // Trigger re-render each time
          return existingState + 1;
        });
    }
    return React.createElement(NonMemoizedButton, {
        onClick: clickMe
    }, 'Click me!');
}

function ComponentWithInlineFunctionAndMemoizedButton() {
    const [state, setState] = React.useState(0);
    const clickMe = evt => {
        evt.preventDefault();
        setState(function(existingState){
          // Trigger re-render each time
          return existingState + 1;
        });
    }
    return React.createElement(MemoizedButton, {
        onClick: clickMe
    }, 'Click me!');
}

function ComponentWithUseCallbackAndNonMemoizedButton() {
    const [state, setState] = React.useState(0);
    const clickMe = React.useCallback(evt => {
        evt.preventDefault();
        setState(function(existingState){
          // Trigger re-render each time
          return existingState + 1;
        });
    }, []);
    return React.createElement(NonMemoizedButton, {
        onClick: clickMe
    }, 'Click me!');
}

function ComponentWithUseCallbackAndMemoizedButton() {
    const [state, setState] = React.useState(0);
    const clickMe = React.useCallback(evt => {
        evt.preventDefault();
        setState(function(existingState){
          // Trigger re-render each time
          return existingState + 1;
        });
    }, []);
    return React.createElement(MemoizedButton, {
        onClick: clickMe
    }, 'Click me!');
}

function NonMemoizedButton (props) {
    const { a, b, c, d, e, f, g, h, i, j, k, l, m, n, onClick } = props;
    const classes = ["some", "joined", "words", "in", "an", "array"]
    return React.createElement('button', {
        className: classes.join(" "),
        onClick: onClick
    }, 'Click me!');
}

const MemoizedButton = React.memo(function MemoizedWrapperComponent (props) {
    const { a, b, c, d, e, f, g, h, i, j, k, l, m, n, onClick } = props;
    const classes = ["some", "joined", "words", "in", "an", "array"]
    return React.createElement('button', {
        className: classes.join(" "),
        onClick: onClick
    }, 'Click me!');
});

Tests:

Inline + NonMemoized
ReactDOM.render(React.createElement(ComponentWithInlineFunctionAndNonMemoizedButton), document.getElementById('root'))
Inline + Memoized
ReactDOM.render(React.createElement(ComponentWithInlineFunctionAndMemoizedButton), document.getElementById('root'))
useCallback + NonMemoized
ReactDOM.render(React.createElement(ComponentWithUseCallbackAndNonMemoizedButton), document.getElementById('root'))
useCallback + Memoized
ReactDOM.render(React.createElement(ComponentWithUseCallbackAndMemoizedButton), document.getElementById('root'))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Inline + NonMemoized
Inline + Memoized
useCallback + NonMemoized
useCallback + Memoized

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases.

**Benchmark Definition**

The benchmark definition is a JSON object that defines a set of test cases. It contains two main parts:

1. **Script Preparation Code**: This code snippet represents the React component used in each test case. The components are defined using JavaScript functions, which are then wrapped with various optimization techniques (more on this later).
2. **Html Preparation Code**: This code snippet sets up the HTML environment for the benchmark, including importing React and ReactDOM.

**Optimization Techniques**

The script preparation code uses three optimization techniques:

1. **Inline Functions**: The `clickMe` function is defined inline within the component's scope.
2. **Non-Memoized Buttons**: The `NonMemoizedButton` component does not use any memoization technique to optimize its rendering.
3. **Memoized Buttons**: The `MemoizedButton` component uses React's built-in `React.memo()` higher-order component (HOC) to memoize its rendering.
4. **useCallback with Non-Memoized Buttons**: The `ComponentWithUseCallbackAndNonMemoizedButton` component uses the `React.useCallback()` hook without any arguments, effectively memoizing the `clickMe` function.
5. **useCallback with Memoized Buttons**: The `ComponentWithUseCallbackAndMemoizedButton` component uses the `React.useCallback()` hook with an empty array as its dependency, effectively memoizing the `clickMe` function and making it only re-run when the dependencies change.

**Pros and Cons of Each Approach**

Here's a brief summary of the pros and cons of each optimization technique:

1. **Inline Functions**: Pros: Simplifies code, reduces memory allocation. Cons: Can lead to slower performance due to larger code size.
2. **Non-Memoized Buttons**: Pros: None notable. Cons: Does not optimize rendering, can be slow.
3. **Memoized Buttons**: Pros: Optimizes rendering by caching component output. Cons: May increase memory usage if not used carefully.
4. **useCallback with Non-Memoized Buttons**: Pros: Memoizes the `clickMe` function without affecting its behavior. Cons: Does not optimize rendering, can be slow.
5. **useCallback with Memoized Buttons**: Pros: Optimizes rendering by memoizing the `clickMe` function and reducing unnecessary re-renders. Cons: May increase memory usage if not used carefully.

**Benchmark Test Cases**

The benchmark test cases are designed to measure the performance of each optimization technique in different scenarios:

1. **Inline + Non-Memoized Buttons**: Measures the performance of an inline function without memoization.
2. **Inline + Memoized Buttons**: Measures the performance of an inline function with memoization.
3. **useCallback + Non-Memoized Buttons**: Measures the performance of a `useCallback` hook without memoization.
4. **useCallback + Memoized Buttons**: Measures the performance of a `useCallback` hook with memoization.

The benchmark results show the number of executions per second for each test case, providing insight into the performance characteristics of each optimization technique.

**Device and Browser Variations**

The benchmark results also include data on various devices and browsers, which can help identify platform-specific performance variations.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:106.0) Gecko/20100101 Firefox/106.0

Browser/OS: Firefox 106 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
Inline + NonMemoized	339261.2 Ops/sec
Inline + Memoized	322322.6 Ops/sec
useCallback + NonMemoized	423595.8 Ops/sec
useCallback + Memoized	505849.9 Ops/sec

Related benchmarks:

Memoization + useCallback (version: 1)

Comparing performance of: Inline + NonMemoized vs Inline + Memoized vs useCallback + NonMemoized vs useCallback + Memoized

Created: 2 years ago by: Registered User

Jump to the latest result

Inline + NonMemoized

Inline + Memoized

useCallback + NonMemoized

useCallback + Memoized

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):