Advanced PWA Performance Topic 13

1. Introduction

Progressive Web Apps (PWAs) are designed to deliver a seamless user experience across devices. In this lesson, we will explore advanced performance techniques to enhance your PWA.

2. Performance Basics

Understanding performance is key to improving your PWA. Key concepts include:

• Loading speed
• Interactivity
• Responsiveness

3. Advanced Techniques

Here are some advanced techniques to improve PWA performance:

1. Use Service Workers: Implement service workers to cache assets and serve them quickly.
2. Lazy Loading: Load images and resources only when they are needed.
3. Code Splitting: Break your JavaScript into smaller chunks to reduce load time.

if ('serviceWorker' in navigator) {
                window.addEventListener('load', function() {
                    navigator.serviceWorker.register('/service-worker.js').then(function(registration) {
                        console.log('ServiceWorker registration successful with scope: ', registration.scope);
                    }, function(error) {
                        console.log('ServiceWorker registration failed: ', error);
                    });
                });
            }

4. Best Practices

To ensure the best performance for your PWA, follow these best practices:

• Minimize HTTP requests by combining files.
• Optimize images and use the correct format.
• Implement HTTPS for a secure connection.
• Test performance regularly with tools like Lighthouse.

5. FAQ