[webkit-dev] Request for position on scheduler.postTask

[Scott Haseley]

Hello WebKit-dev,

I’d like to request WebKit’s official position on scheduler.postTask(), an
API for scheduling and controlling prioritized tasks. It is specified in
[1] and further described in [2]. We’ve presented the API a few times to
the WebPerf WG. One concern raised there by rniwa was the risk of priority
inversions, which we’ve explored in [3].

We recently finished running an Origin Trial in Chrome. Airbnb, who we’ve
been working closely with, experimented with using the API to improve their
site’s performance, which they wrote about recently [4].

[1] Spec: https://wicg.github.io/scheduling-apis/
[2] Explainer:
https://github.com/WICG/scheduling-apis/blob/main/explainers/prioritized-post-task.md
[3] Priority inversion exploration:
https://github.com/WICG/scheduling-apis/blob/main/misc/priority-inversion.md
[4] Airbnb blog post:
https://medium.com/airbnb-engineering/building-a-faster-web-experience-with-the-posttask-scheduler-276b83454e91

Additional Links:
 - Preliminary TAG review:
https://github.com/w3ctag/design-reviews/issues/338
 - TAG Spec review (under review):
https://github.com/w3ctag/design-reviews/issues/647
 - Chrome Status entry:
https://www.chromestatus.com/feature/6031161734201344

Thank you,
Scott
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