Content Collections

• Schema Definitions: Continue using src/content/config.ts with zod for type-safe content validation.
• Content Queries: Utilize getCollection() for type-safe content retrieval.
• Frontmatter Schemas: Define schemas using defineCollection.
• Single Entry Retrieval: Employ getEntryBySlug for fetching individual entries.
• Content Relationships: Leverage collection references to establish relationships between content items.

View Transitions

• Implementation: Use transition:name and transition:animate directives to define view transitions.
• State Persistence: Apply transition:persist to maintain component state during page transitions.
• Animation Configuration: Set animations with transition:animate="slide|fade|none".
• Event Handling: Manage transition events using document.addEventListener('astro:page-load').
• Prop Preservation: Use transition:persist-props to retain specific props during transitions.

Islands Architecture

• Immediate Interactivity: Apply client:load for components requiring immediate interactivity.
• Deferred Hydration: Use client:visible for components that can delay hydration until visible.
• Client-Only Components: Implement client:only when server-side rendering is unnecessary.
• Responsive Hydration: Utilize client:media for components that hydrate based on media queries.
• Idle Hydration: Leverage client:idle for non-critical interactive components.

Server-Side Features

• Cookies Management: Use Astro.cookies to handle server-side cookies.
• Middleware: Implement middleware with defineMiddleware() in src/middleware.
• Request Access: Access request details via Astro.request in server endpoints.
• Dynamic Routes: Handle dynamic routes using the [...spread].astro pattern.
• API Endpoints: Create API endpoints in src/pages/api using Response objects.

Image Optimization

• Image Component: Use the Image component with src, alt, and width/height props.
• Picture Component: Implement the Picture component for art direction.
• Service Configuration: Configure the image service in astro.config.mjs.
• Modern Formats: Use format="avif,webp" for modern image formats.
• Responsive Images: Apply the densities prop for responsive images.

Integration System

• Framework Integrations: Configure integrations in astro.config.mjs.
• Deployment Adapters: Use adapters like adapter-vercel, adapter-netlify, or adapter-node for deployment.
• Vite Plugins: Implement Vite plugins through Astro integrations.
• UI Frameworks: Configure renderers for UI frameworks as needed.
• Environment Variables: Handle integration-specific environment variables appropriately.

Routing and Pages

• File-Based Routing: Place pages in src/pages for automatic routing.
• Dynamic Parameters: Use [param].astro for dynamic route parameters.
• Rest Parameters: Implement [...spread].astro for rest parameters in routes.
• Redirects: Handle redirects using Astro.redirect.
• Nested Layouts: Implement nested layouts using slot patterns.

Dos

• Static Path Generation: Use getStaticPaths for generating static paths.
• Hydration Strategies: Implement appropriate island hydration strategies.
• Type-Safe Content: Utilize content collections for type-safe content management.
• View Transitions: Configure view transitions appropriately.
• SSR Capabilities: Leverage server-side rendering capabilities effectively.

Don’ts

• Overusing client:load: Avoid using client:load when client:visible suffices.
• Mixing SSR and client:only: Never mix server-side rendering and client:only in the same component.
• Redundant Queries: Avoid unnecessary content collection queries.
• Skipping Animations: Don’t skip view transition animations without reason.
• Bypassing Image Optimization: Never bypass Astro’s image optimization features.

By incorporating these practices, you can effectively leverage the features introduced in Astro 5.5 to enhance your project’s performance and maintainability.