TIL: if you cache images with a Service Worker, and you have a Content Security Policy, the image's origin should be in both the
@bagder hi Daniel, reading https://daniel.haxx.se/blog/2016/08/18/http2-connection-coalescing/ (yes, I'm late 😅)
If DNS B.example.com returns
192.168.0.3, is TLS really enough to be sure it also works on
BTW, there's a typo near the end: "both IPv4 and IPv4 addresses".
I guess we'll (unfortunately) see a lot of turtles in Firefox soon, while browsing the Web with devtools open… 🐢
JUST LANDED in Firefox Nightly:
Appears when the server response time for a request exceeds the recommended limit of 500 ms (adjustable in about:config).
Awesome dev work by @b4bomsy and planning by @digitarald & @janodvarko!
If you spot it and it helps, let us know!H
It's exactly the same code. 🤷♂️
New project: Speedlify 🐇
A self-hosted dashboard to continuously measure and publish web site performance statistics using Lighthouse and Axe.
It took me just a few minutes to built my dashboard for multiple sites:
Looks like #Dareboost liked improvements made yesterday evening! 💪
Speed Index at 800 on 3G, despite a laaate 530 ms TTFB, not bad! 🤔
Paint timing metrics are too optimistic. In 85-95% of cases, they are recorded before any pixels are actually rendered to the screen.
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