In the last couple of months we as the dev team of @SZ@twitter.com got the opportunity by our stakeholders to shift a big part of our focus to the topic of performance, which is basically a dev dream come true. Boss: ☝️ ”Make the website faster!” Me: 😍 “Yeeeeeeeees!”
So what do we measure and how do we measure it? Our most important metric for now is the “First Meaningful Paint” (FMP) https://developers.google.com/web/tools/lighthouse/audits/first-meaningful-paint, tested on a 3G connection on a mobile device. We monitor our perf. with @SpeedCurve@twitter.com (which runs WebPageTest tests in the background).
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