Performance Optimization
Techniques to optimize your Hello Ruyso applications for speed and efficiency.
1. Identify Bottlenecks
Profiling
Use profiling tools to identify slow functions and memory leaks.
Code Analysis
Review code for inefficient algorithms and excessive DOM manipulation.
Example: Benchmarking
// Benchmark before optimization
const start = performance.now();
for (let i = 0; i < 1000000; i++) {
// simulate work
}
const duration = performance.now() - start;
console.log(`Took ${duration} ms`);
This example measures execution time to identify areas for improvement.
2. Optimization Techniques
Render Optimizations
Use virtualization and lazy loading to reduce DOM elements.
Caching
Implement caching strategies for APIs and static assets.
Lazy Loading Example
const items = Array(10000).fill('Item');
const observer = new IntersectionObserver(entries => {
entries.forEach(e => {
if (e.isIntersecting) {
renderItems(e.target.dataset.index);
}
});
});
// Add more items on scroll
window.addEventListener('scroll', () => {
// Load more elements
});
Load content only when it enters the viewport to improve initial load time.
Advanced Tools
Lighthouse
Audits performance, accessibility, and SEO in web applications.
Performance Profiler
Chrome DevTools performance tab for detailed timing profiles.
Web Vitals
Track key metrics like FID, LCP, and CLS for real user monitoring.