What is a service worker fetch event?

Can you explain what a service worker fetch event is?

Sure! A service worker fetch event is triggered whenever a network request is made by the browser. It allows developers to intercept and handle requests, enabling features like caching and offline support.

How does the fetch event improve performance?

The fetch event can improve performance by allowing the service worker to serve cached responses instead of making network requests, reducing load times.

Can you give me an example of how to implement a fetch event?

Absolutely! Here's a simple example:

self.addEventListener('fetch', event => {
  event.respondWith(
    caches.match(event.request).then(response => {
      return response || fetch(event.request);
    })
  );
});

What are some common use cases for fetch events?

Common use cases include offline access, caching assets for faster load times, and serving custom responses based on network conditions.