Performance Optimization

Techniques and tools to maximize speed, efficiency, and scalability in your applications.

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What is Performance Optimization?

Performance optimization involves applying techniques to enhance system speed, reduce resource consumption, and improve user experience through efficient resource management.

Caching

Use in-memory or distributed caching systems to store frequently requested data and reduce backend workload.

Cache-Control: max-age=3600

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Content Compression

Enable Gzip or Brotli compression to reduce asset sizes and improve transfer speeds.

Content-Encoding: gzip

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Key Optimization Strategies

Load Balancing

Distribute traffic across multiple servers to avoid overloading any single resource.

Database Indexing

Use indexes to accelerate query performance and reduce latency in database operations.

Asset Optimization

Minify CSS, JavaScript, and images to reduce payload sizes and improve load times.

Monitoring & Metrics

Use the following performance metrics to identify optimization opportunities in your application:

First Input Delay

Measures time from when a user first interacts with your application to when the browser actually processes the input.

Score: <100ms

Cumulative Layout Shift

Tracks unexpected layout shifts that can impact user experience negatively.

Score: <0.35

Largest Contentful Paint

Measures the time to load the largest element on your page.

Under 1.4s

Optimization Examples

Node.js Caching

const cache = require('node-cache');

const myCache = new cache({
  stdTTL: 300,
  checkPeriod: 60
});

app.get('/data', (req, res) => {
  const cached = myCache.get('big-data');
  
  if (cached) {
    return res.send(cached);
  }
  
  // Fetch and cache new data
  fetchData().then(data => {
    myCache.set('big-data', data);
    res.send(data);
  });
});

Lazy Loading

const Home = React.lazy(() => import('./Home'));
const About = React.lazy(() => import('./About'));

function App() {
  return (
    
      
        } />
        } />
      
    
  );
}