En Rendering on the Web se analizan las distintas formas que existen de generar páginas web en la actualidad:

As developers, we are often faced with decisions that will affect the entire architecture of our applications. One of the core decisions web developers must make is where to implement logic and rendering in their application. This can be a difficult, since there are a number of different ways to build a website.

Our understanding of this space is informed by our work in Chrome talking to large sites over the past few years. Broadly speaking, we would encourage developers to consider server rendering or static rendering over a full rehydration approach.

In order to better understand the architectures we’re choosing from when we make this decision, we need to have a solid understanding of each approach and consistent terminology to use when speaking about them. The differences between these approaches help illustrate the trade-offs of rendering on the web through the lens of performance.

Rendering

• SSR: Server-Side Rendering – rendering a client-side or universal app to HTML on the server.
• CSR: Client-Side Rendering – rendering an app in a browser, generally using the DOM.
• Rehydration: “booting up” JavaScript views on the client such that they reuse the server-rendered HTML’s DOM tree and data.
• Prerendering: running a client-side application at build time to capture its initial state as static HTML.

Performance

• TTFB: Time to First Byte – seen as the time between clicking a link and the first bit of content coming in.
• FP: First Paint – the first time any pixel gets becomes visible to the user.
• FCP: First Contentful Paint – the time when requested content (article body, etc) becomes visible.
• TTI: Time To Interactive – the time at which a page becomes interactive (events wired up, etc).