Astro: A New Era of Efficient Lazy Loading
summary
Astro is presented as a web framework using Island Architecture to send static HTML by default and hydrate only interactive islands, reducing shipped JavaScript and improving SEO and Core Web Vitals (targets: LCP ≤2.5s, CLS ≤0.1, FID ≤100ms). The talk demonstrates a React counter using load vs visible hydration directives (load hydrates immediately; visible waits until the element is on-screen) and a Qwik counter exploiting Resumability to deliver no JavaScript until user interaction.
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chapters (8)
- 0:00Introduction
- 2:33Web frameworks evolution
- 5:48Core Web Vitals explained
- 7:56Astro overview
- 10:01Demo with React
- 11:09Lazy loading with visible directive
- 12:20Astro and Quick framework
- 13:24Summary
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