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The service worker lifecycle | Articles | web.dev

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The lifecycle of the service worker is its most complicated part. If you don't know what it's trying to do and what the benefits are, it can feel like it's fighting you. But once you know how it works, you can deliver seamless, unobtrusive updates to users, mixing the best of web and native patterns. This is a deep dive, but the bullets at the start of each section cover most of what you need to know. The intent of the lifecycle is to: That last one is pretty important. Without service workers, users can load one tab to your site, then later open another. This can result in two versions of your site running at the same time. Sometimes this is ok, but if you're dealing with storage you can easily end up with two tabs having very different opinions on how their shared storage should be managed. This can result in errors, or worse, data loss. In brief: Take this HTML: It registers a service worker, and adds image of a dog after 3 seconds. Here's its service worker, sw.js: It caches an ima

Home Articles The service worker lifecycle Stay organized with collections Save and categorize content based on your preferences. Jake Archibald The lifecycle of the service worker is its most complicated part. If you don't know what it's trying to do and what the benefits are, it can feel like it's fighting you. But once you know how it works, you can deliver seamless, unobtrusive updates to users, mixing the best of web and native patterns. This is a deep dive, but the bullets at the start of each section cover most of what you need to know. The intent The intent of the lifecycle is to: Make

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