Improve Cache Management for Service Worker Scripts

Category: Service Worker
Type: New or changed feature
Status: Enabled by default (Chrome 68)
Intent stage: None

Breaking change: No
Enterprise impact: None
Spec maturity: Incubation

Summary

The HTTP cache will be ignored when requesting updates to the service worker. Requests for importScripts will still go through the HTTP cache. But this is just the default. A new registration option, ServiceWorkerRegistration.updateViaCache is available that offers control over this behavior.

Standards & signals

Specification: https://w3c.github.io/ServiceWorker/
Firefox: Shipped/Shipping
Safari: No signal
Web developers: Positive
Tracking bug: https://crbug.com/675540

Ecosystem

Web Platform Tests: https://wpt.fyi/results/?q=improve-cache-management-for-service-worker-scripts
Chrome Platform Showcase: https://chrome-platform-showcase.paulkinlan-ea.deno.net/features
GenDN reference: https://gendn.paulkinlan-ea.deno.net/features
chrome.dev demos search: https://www.google.com/search?q=site%3Achrome.dev+Improve%20Cache%20Management%20for%20Service%20Worker%20Scripts
MDN Web Docs: https://developer.mozilla.org/en-US/search?q=Improve%20Cache%20Management%20for%20Service%20Worker%20Scripts
Baseline status: https://webstatus.dev/?q=Improve%20Cache%20Management%20for%20Service%20Worker%20Scripts

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