- [Instructor] When a website is making a fetch…to the network,…so it's making an actual HTTP request,…typically, the fetch goes to the web server,…the web server takes the content from a file system,…and that content goes through TCP or UDP…in packets through the network.…So, in chunks.…Probably, you've heard about this…even if you're not a specialist in network.…When you're downloading files,…these files are coming from the network,…on internet, in different packets,…smaller pieces that are traveling along,…and then, typically, the browser…is basically waiting for all the small pieces…to appear…and then give you the original content.…
And that's in the fetch event…when the promise is fulfilled,…and your then callback is being executed.…So, meaning that, you will render the content,…or you will use the content,…when all the pieces were downloaded.…Sometimes it's not even about the network.…It's about, also, the operating system…that is parsing each packet individually.…So fortunately today, we have a service worker.…
- Service worker life cycle
- Registering service workers
- Handling service worker events
- Updating service workers
- Acting as a network proxy
- Configuring cache storage
- Communicating with clients
- Optimizing web performance
Skill Level Intermediate
1. A New Citizen for the Web
2. Work with Service Workers
3. Acting as a Network Proxy
4. Cache Storage
5. Work with APIs in the Service Worker
6. Tips and Tricks for Web Performance
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