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What is a Proxy Design Pattern?

Deepika Sahu answered on December 30, 2022 Popularity 10/10 Helpfulness 2/10

answer What is a Proxy Design Pattern?

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What is a Proxy Design Pattern?

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Proxy design pattern falls under the category of structural design that represents the functionality of other classes.
This pattern lets the developers provide a substitute for another object. 
This is called a proxy object.
This helps to control the access to the original object and allows us to perform many tasks before or after the request reaches the original object.

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Contributed on Dec 30 2022

Deepika Sahu

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7. Proxy:
The Proxy pattern provides a surrogate or placeholder for another object to control access to it.

Example in ReactJS:

Suppose you have a resource-intensive component, and you want to lazy load it.

// HeavyComponent.js
const HeavyComponent = () => {
  // Some heavy computations or data fetching
  return <div>Heavy Component Content</div>;
};

// Proxy for Lazy Loading
const LazyLoadProxy = ({ shouldLoad }) => {
  if (shouldLoad) {
    return <HeavyComponent />;
  } else {
    return <div>Loading...</div>;
  }
};

// Usage
const App = () => {
  const [loadHeavyComponent, setLoadHeavyComponent] = useState(false);

  return (
    <div>
      <button onClick={() => setLoadHeavyComponent(true)}>Load Heavy Component</button>
      <LazyLoadProxy shouldLoad={loadHeavyComponent} />
    </div>
  );
};

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Contributed on Sep 08 2023

Amjad Saeed

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What is a Proxy Design Pattern?

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