Fastify-vite is an experimental Fastify plugin that facilitates the integration of Vite's capabilities, particularly server-side rendering with client-side hydration, into Fastify applications. Although not yet recommended for production use, fastify-vite simplifies the typically complex process of combining Fastify and Vite to achieve seamless server-side rendering. The setup involves creating several files, including server.js and main.js, with the main entry point being server.js, which configures Fastify to utilize fastify-vite. The package supports Vue Single File Components and enables Vue components to make API requests during server-side rendering, reducing the need for additional HTTP requests. Fastify-vite is complemented by the fastify-api plugin, which allows API endpoints to be created for efficient data fetching. The useHydration hook in fastify-vite-vue aids in fetching initial data without direct HTTP requests, ensuring optimal performance. Despite its current experimental status, fastify-vite offers a glimpse into the potential for more streamlined server-side rendering and hydration processes in Fastify applications.