Javascript Rendering Patterns
Tags: javascript, webdev, programming, ssr
Published: 2023-02-13 10:48:01


> Este artículo fue originalmente escrito en [https://matiashernandez.dev](https://matiashernandez.dev/blog/post/rendering-patterns)


Web development is a constantly evolving field that is full of new and innovative solutions to tackle the ever-growing needs of modern websites. With the growth of the web, there have been numerous advances in how websites are built and rendered, giving rise to several rendering patterns and metaframeworks.

In this article, we'll take a look at what rendering patterns and metaframeworks are, why there are so many of them, and explore some of the most popular options available today.

## **What are Rendering Patterns?**

When it comes to web development, the term "rendering" refers to the process of generating and displaying content on a web page. In this context, "rendering patterns" refer to different approaches and techniques used to create and deliver web content to users.

There are a variety of rendering patterns, each with its own set of benefits and trade-offs. Some patterns are geared towards static, content-driven websites, while others are designed for dynamic, interactive applications. Some patterns focus on providing a fast and efficient user experience, while others prioritize flexibility and ease of development.

The choice of rendering pattern often depends on the specific needs and requirements of a project. For example, if your website is primarily static and doesn't require frequent updates, you might opt for a simple static site approach. On the other hand, if your website needs to display dynamic data, you might consider using a server-side rendering (SSR) pattern or a single-page application (SPA) pattern.

Regardless of the specific pattern, the ultimate goal is to create a seamless, user-friendly experience that delivers the content your users are looking for as quickly and efficiently as possible.

## **What are Metaframeworks?**

Metaframeworks are a type of framework that provides a set of abstractions and tools to help developers build web applications. They can provide a number of benefits over traditional frameworks, including improved developer experience, increased productivity, and better performance.

Metaframeworks differ from traditional frameworks in that they focus on providing a set of abstractions and tools that developers can use to build their applications, rather than providing a complete and prescriptive solution. This allows developers to have more control over the architecture and structure of their applications, and to tailor their solutions to the specific needs of their projects.

In web development, metaframeworks often provide abstractions for server-side rendering, client-side rendering, and data management, as well as tools for managing the build process, optimizing performance, and handling deployment. Some popular metaframeworks include Next.js, Gatsby, Nuxt, and SvelteKit.

The use of metaframeworks can help to simplify the development process and improve the overall performance and scalability of web applications. They can also help to make it easier for teams of developers to work together on a project, as they provide a common set of tools and abstractions that everyone can use.

Ultimately, metaframeworks are an important tool for modern web development, and can help to make it easier and faster to build high-quality, scalable web applications. Whether you are a solo developer or part of a large team, metaframeworks can help you to build better web applications more quickly and with greater ease.

## **Why are there so many Rendering Patterns?**

The proliferation of rendering patterns in web development can be attributed to the constant evolution of technology and the diverse needs of businesses and developers. With the advent of new and improved technologies, developers are presented with a multitude of options for building websites and web applications. Each technology has its own unique set of strengths and weaknesses, and it is up to the developer to choose the best tool for the job at hand.

Moreover, different businesses have different requirements for their websites and web applications, and a single technology or solution may not meet the needs of every business. As a result, developers are constantly searching for new and innovative solutions that can provide the best results for their clients. This drives the creation of new rendering patterns and the improvement of existing ones, as developers strive to find the most efficient and effective ways to build web applications.

In addition, the open-source nature of web development has enabled developers to freely share their solutions and innovations with the community. This sharing of knowledge and expertise has accelerated the development of new rendering patterns, as developers learn from each other and build upon existing solutions to create even better ones.

It is also important to note that the wide availability of web development tools and libraries has made it easier for developers to experiment with new approaches and technologies. This has encouraged developers to push the boundaries of what is possible with web development and has led to the creation of new rendering patterns.

## **Rendering Patterns Overview**

Here's an overview of some of the most popular rendering patterns:

1. **Static Site**: The OG of web development, when things were simple, you could just upload a bunch of static files to a service through FTP. This is still a popular option today, and there are several frameworks, such as Hugo, Jekyll, and A11y, that make it easy to create a static site. However, it's also possible to build a static site "by hand" without the use of any framework.
2. **MPA (Multi-Page Application)**: This pattern emerged as a solution to the dynamic data problem faced by static sites. MPA uses server-side code to generate HTML based on dynamic data. This is how many senior developers first got started with servers and databases, and popular frameworks include Laravel, Rails, and Django.
3. **SPA (Single-Page Application)**: This is the golden era of the main JavaScript frameworks and addresses the navigation issue faced by MPA. SPA ships a large amount of JavaScript to render all aspects of the application, but it also has its own set of problems, such as poor SEO, too much JavaScript, and loading spinner issues. Popular SPA frameworks include Angular, React, Vue, Svelte, and Solid.
4. **SSR (Server-Side Rendering)**: This pattern involves initial rendering being done on the server (usually with Node or another engine), after which client-side JavaScript takes over to provide the SPA experience. Popular SSR frameworks include Next.js, Nuxt, and SvelteKit. However, this pattern requires a server.
5. **SSG** (**Static Site Generation)**: This pattern, known as SSG, is similar to the first one but allows for a better developer experience by using a web framework, dynamic data, etc. The framework will "compile" the site into multiple static pages. Gatsby is the king in this area, but other frameworks like Next.js, Nuxt, and SvelteKit can also implement this pattern.

6. **ISR (Incremental Static Regeneration)**: ISR is a newer approach that tries to solve some of the problems with SSG. With ISR, you can deploy a static site and then rebuild individual pieces of it "on the fly" using cache. This way, you can enjoy the benefits of a static site while also allowing for some dynamic content.
    
    Vercel is a platform that supports ISR out-of-the-box. This makes it a great option for developers who want to implement ISR without having to set up and manage a server themselves.
    
    The main advantage of ISR is that it solves the problem of long build and deployment times that comes with SSG. With ISR, you can deploy a static site and then rebuild individual pieces as needed, which greatly reduces the time it takes to deploy changes.
    
    However, it's worth noting that ISR still requires a server to function, which can be a drawback for some users.
    
7. **Partial Hydration** is a rendering pattern that aims to solve the problem of the first load being "not usable" in Hydration patterns. With Partial Hydration, the server renders the HTML and ships it to the browser, but only the required JavaScript is lazy loaded, making the hydrated page interactive by pieces.
    
    This approach can greatly improve the user experience, as it allows the user to start interacting with the site while the rest of the JavaScript is still being loaded.
    
8. **The Islands Architecture** is an approach that was first popularized by [@ksylor](https://twitter.com/ksylor) and is now being (re)popularized by [@astrodotbuild](https://twitter.com/astrodotbuild). The idea behind Islands Architecture is to prevent JavaScript from taking over the entire page and instead isolate the pieces that require it.
    
    With this approach, you start with static HTML and use JavaScript to hydrate isolated components. This allows you to keep using the "view layer" of your choice, whether that's React, Svelte, or Solid, and write your application as you normally would. The result is a static site with pieces of interactivity, or "islands."
    
    One of the benefits of Islands Architecture is that it can improve the overall performance of the site, as only the necessary JavaScript is loaded.
    
9. **Resumability** is a relatively new rendering pattern that is gaining popularity among developers. It was popularized by  [@QwikDev](https://twitter.com/QwikDev) and coined by [@mhevery](https://twitter.com/mhevery). The idea behind Resumability is to avoid Hydration altogether by rendering on the server and sharing both the static files and the framework state.
    
    In this way, the application does not "start over" when it is loaded, but instead "continues where it left off" on the server. The best analogy for this is a virtual machine that can be paused, moved to another place, and then continue exactly where it was left.
    
    Resumability has the potential to greatly improve the user experience, as it allows for a smoother, more seamless transition from server to client. However, it's worth noting that this approach is still relatively new, so there may be some challenges to overcome as the technology continues to evolve.
    

## Conclusion

With so many rendering patterns and metaframeworks available, it can be overwhelming to choose the right one for your project. It's important to consider your specific use case and requirements before making a decision, as each rendering pattern and metaframework has its own pros and cons. Ultimately, the best choice will depend on your specific needs and goals.



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