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.

Documentation

• * (Once written) https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/updateViaCache
• * https://github.com/w3c/ServiceWorker/issues/893

Specification

Specification link

Status: Specification being incubated in a Community Group

Status in Chromium

Blink components: Blink>ServiceWorker

Implementation status: Enabled by default (tracking bug)

Consensus & Standardization

• Firefox: Shipped/Shipping
• Safari: No signal
• Web Developers: Positive

Owners

• falken@chromium.org
• yuryu@chromium.org
• worker-dev@chromium.org

Comments

Previously, HTTP requests that checked for updates to the service worker were fulfilled by the HTTP cache by default. If a Cache-Control header was inadvertently set on a service worker, then service worker updates could be delayed.

Last updated on 2022-01-14