Why Astro?
Astro has quickly become one of the most popular frameworks for building content-driven websites. Unlike traditional SPAs that ship heavy JavaScript bundles, Astro takes a fundamentally different approach — it renders HTML on the server and only ships JavaScript when absolutely necessary.
The Island Architecture
Astro pioneered the concept of island architecture. Instead of hydrating the entire page with JavaScript, Astro lets you selectively hydrate individual components — “islands” of interactivity in a sea of static HTML.
---// This runs at build timeimport Counter from '../components/Counter.svelte';import Header from '../components/Header.astro';---
<Header /><!-- Static HTML, zero JS -->
<Counter client:visible /><!-- Interactive island, loaded when visible -->Content Collections
One of Astro’s killer features is Content Collections — a type-safe way to manage your Markdown and MDX content:
import { defineCollection, z } from 'astro:content';
const blog = defineCollection({ schema: z.object({ title: z.string(), published: z.date(), tags: z.array(z.string()), }),});Performance by Default
Astro sites consistently score 100 on Lighthouse performance audits. By shipping zero JavaScript by default and leveraging static generation, pages load almost instantly.
Getting Started
npm create astro@latest my-blogcd my-blognpm run devThat’s it — you’re up and running with a blazing-fast website. In future posts, we’ll explore more advanced Astro patterns including middleware, API routes, and server-side rendering.
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