Intent to Prototype: ServiceWorker static routing API
Yoshisato Yanagisawa
Contact emails
yyana...@google.com, sisid...@google.com
Explainer
https://github.com/yoshisatoyanagisawa/service-worker-static-routing-api
Specification
None
Summary
This API allows developers to configure the routing, and allows them to offload simple things ServiceWorkers do. If the condition matches, the navigation happens without starting ServiceWorkers or executing JavaScript, which allows web pages to avoid performance penalties due to ServiceWorker interceptions.
Blink component
Motivation
Starting ServiceWorkers is known to be a slow process, and web users need to wait for its startup if the ServiceWorker intercepts loading the page resources. At the same time, the ServiceWorker brings flexibility to the transport layer, and it behaves as a client-side proxy. Developers can implement offline support or provide client-side content modification with it. Currently, ServiceWorkers intercept all requests for pages within their scope, which brings a performance penalty within the scope.
Initial public proposal
https://github.com/yoshisatoyanagisawa/service-worker-static-routing-api
Debuggability
The registered router rules will be visible via chrome://serviceworker-internals or DevTools.
Is this feature fully tested by web-platform-tests?
It will be before shipping
Flag name
#service-worker-static-router
Requires code in //chrome?
False
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1371756
Estimated milestones
No milestones specified