Jake’s blow-by-blow account of uncovering a serious browser vulnerability is fascinating. But if you don’t care for the technical details, skip ahead to to how different browser makers handled the issue—it’s very enlightening. (And if you do care for the technical details, make sure you click on the link to the PDF version of this post.)
I remember Jason telling me about this weird service worker caching behaviour a little while back. This piece is a great bit of sleuthing in tracking down the root causes of this strange issue, followed up with a sensible solution.
Making use of the real-time nature of push notifications without the annoying notification part.
If you’ve got a service worker issue, it might not be a problem with your code.