astro-framework

Astro islands hydration directives control when client-side JavaScript loads. Use client:load for immediate interactivity, client:idle for lower priority, and client:visible to defer hydration until the component enters the viewport. Use server:defer for server islands to keep heavy logic entirely backend-side.

Configure hybrid rendering and SSR adapters in astro.config.mjs by importing the desired adapter and adding it to the export default defineConfig object. This enables server-side rendering strategies, allowing you to mix static site generation with dynamic server-rendered pages.

The Astro Content Layer API manages structured data for content-driven websites. Use glob or file loaders to fetch static local data, and implement live loaders to pull dynamic data from external sources across Astro projects, keeping your content schema robust and isolated.

Yes, Astro supports multi-framework UI integrations. You can import and render React, Vue, Svelte, and Solid components together in a single Astro project. Each framework's renderer is configured via integrations, and components are hydrated selectively using islands architecture.

Set up i18n routing by defining locale configurations in astro.config.mjs, and manage environment variables using astro env. This ensures safe, isolated execution of environment-specific data and provides robust validation for internationalized content paths.

Astro server islands allow you to isolate and defer rendering of specific components using server:defer. This technique prevents slow-running dynamic components from blocking the initial HTML payload, keeping fast, content-driven static pages lightweight while rendering heavier elements asynchronously.