Over a week ago we made an improvement that combines two separate domain and path redirects that @Shopify merchants have configured into one 🚀 E.g. www.example.com/watches -> example.com/collections/watches is now a single redirect. A great change for both performance and SEO.
This week we made a change that enables "stale-while-revalidate" caching strategy for "accelerated-checkout-backwards-compat.css".
We're seeing 1.7% FCP improvement for same-site navigations across all stores that use the quick buy buttons 🚀
Chart showing p75 and p90 improvements over time that were mentioned in the post.
Two weeks ago we shipped changes that cut Portable Wallets execution time by at least 40% at both p75 and p90. INP for interactions related to those scripts dropped ~25%. Overall INP improved by −8 ms (p75) and −16 ms (p90) across all Shopify stores using quick buy buttons 🚀
#JavaScript: When it comes to breaking up long tasks, the scheduler API seems quite convenient:
await scheduler.yield();
Alas, not supported by Safari yet: caniuse.com/mdn-api_sche...
Thankfully, providing your own fallback implementation is easy: web.dev/articles/opt...
✨ SPDY STREAM 011 ✨ w/ @krzksz.bsky.social & @yoav.ws
After deploying the SPECULATION RULES API to their merchants, they join me this week to discuss the experience and their findings. Join us! (updated day and time)
📆 Thursday Sept 25
⏰ 11am EST, 5pm CEST
🔗 bit.ly/spdy-stream-011
