Qwik Framework Decoded [2023]

Qwik Framework Decoded [2023]

Speed optimization is a critical aspect in the creation of contemporary web applications. We all know how frustrating it can be when we have to wait for information to load. That’s why, as web developers, it’s our job to make sure that users can access the information they need as quickly as possible. In this day and age, JavaScript frameworks have become an indispensable tool for many of us, thanks to their ability to provide ease of development. But, as with all things, there’s a catch. While the developers try to optimize the speed of the application, they try to implement lazy loading and using this approach can sometimes lead to complicated code, which can be a headache for developers.

So what is the solution?


To solve this problem, Qwik framework comes in to save the day! This HTML-first framework is designed to make web applications as light as a feather by bundling the JavaScript code in such a way that it’s only presented to the application when it’s needed. That’s right, you only get the code you need, when you need it. And that’s what makes Qwik so brilliant. It provides developers with the ease and speed they need to make their applications fully functional and running, without sacrificing efficiency.

So, what do you think? Isn’t the Qwik framework just the perfect solution for the modern web developer? It takes the best of both worlds – the convenience of a JavaScript framework and the simplicity of HTML – and blends them into one irresistible package. If you ask me, the Qwik framework is a true work of art, a testament to the innovation that’s driving the world of web development forward.

Qwik Framework

How Does Qwik Provide Developers With Speed?

Ah, the age-old dilemma of balancing interactivity and page speed! I’m sure we’ve all faced this issue at some point in our web development careers. But fear not, for there is a solution that promises to alleviate this conundrum. Qwik is designed to help you improve your page speed score, thereby attracting more and more users to your website.

Now, before we delve into how Qwik can make your applications run faster, I know what you might be thinking – “Can’t I just reduce the size of my JavaScript code to improve my page speed?” Well, in an ideal world, perhaps. But if you want to offer your users a rich, interactive experience, chances are you need to use a fair amount of JavaScript components. This is where the Qwik framework comes in handy. It does the heavy lifting for you, allowing you to focus on making your product even better, without sacrificing interactivity for speed.

PageSpeed Insights of Google Meet

To assess the speed of your web application or webpage, you can turn to PageSpeed Insights. The Qwik framework will help you enhance your page speed score and take your website to the next level. Trust me, making the switch to the Qwik framework will be a decision you won’t regret! 

Let’s dive straight into getting a better understanding of what’s under the hood of Qwik.

How Does Qwik Framework Work?

Working of Qwik Framework
  • The Qwik Server engages in a process of serialization, whereby it meticulously transcribes the current state of the application, the event handlers, and the constituent HTML and code components, into a compact and easily manageable format. 
  • This serialized information is then transmitted to the client, where it is displayed in the form of HTML on the page. 
  • Upon completion of the loading process, deserialization occurs. 
  • The Qwik framework exhibits remarkable ingenuity, as it not only serializes the components but also the event handlers and dynamically generates JavaScript, tailored to the specific interaction and requirements of the user who is accessing the application via the client. 
  • The distinct and separate states of each component and event handler serve to simplify their management, as they can refer to their deserialized state, without having to concern themselves with the state of the parent component.

Resumabilty vs Hydration: What Gives Qwik Speed?

Allow me to explain the intricacies of hydration in the context of web development. Essentially, hydration is the act of determining which listeners within the code should react to user interactions on the page and how they should react. Now, one of the key reasons that Qwik is able to achieve lightning-fast speeds is due to its departure from the utilization of hydration. By eliminating this process, Qwik has streamlined its operations and optimized performance, leading to a seamless and enjoyable user experience.

Hydration Explained

A prevalent challenge that has been a persistent issue with hydration – the inefficiency of reexecuting code during the server-side rendering process. This duplicitous and time-consuming practice involves downloading code that has already been executed and running it once more, leading to an exponential increase in the load on the application and a subsequent degradation of performance.

In simpler terms, this redundant process results in slow and unsatisfactory experiences for the end user. It’s about time we strive for more effective and efficient solutions. By embracing cutting-edge frameworks like Qwik, we can eliminate such hindrances and ensure that our applications run at the speed of light.

On the other hand, the concept of resumability serializes the necessary information and embeds it within the HTML, facilitating a more efficient retrieval of the information exactly as it was left. Qwik harnesses the power of this concept, eliminating the need for downloading and executing the entire JavaScript code on the client side. By integrating resumability with the principle of “progressiveness,” Qwik enables seamless interactivity by providing the necessary JavaScript code only when it is explicitly requested by the user.

In short, Qwik’s innovative approach to resumability, in conjunction with its progressive methodology, results in lightning-fast web pages that are both interactive and highly performant. With Qwik, gone are the days of slow, clunky web applications – welcome to the age of sleek, seamless user experiences.

Can’t We Just Use Lazy Loading?

Achieving swift startup times presents a conundrum – it requires either downloading a reduced quantity of JavaScript code or executing a diminished amount of said code, both of which are untenable compromises if one seeks to furnish the users with a superior degree of interactivity. For attaining resumability, it is crucial to make closures serve as entry points. With a clear differentiation between closures that have been transformed into entry points, resumability can be executed in parallel with lazy loading.

Lazy loading, where code chunks are executed only once, is a preferred method. However, this necessitates that the code be prepared to handle all interactions, otherwise, a delay will ensue, which is an undesirable outcome. The Qwik framework resolves this predicament by continuously monitoring the running application’s state through a service worker, thus allowing it to determine which code is needed for which interaction and respond accordingly.


In final consideration, the Qwik framework is an innovative amalgamation of modern-day creativity and the best of conventional JavaScript frameworks, owing to its creator – Misko Hevery who not only envisioned Qwik but also dedicated years to the development of Angular. The simplicity of Qwik’s concept is easy to comprehend and results in a reduction of unnecessary work, however, critical interactions should be thoughtfully crafted to ensure that necessary scripts are delivered alongside the dynamically generated content on the client side. The Qwik optimizer serves as a touchstone for developers, granting them the ability to exert control over how the files are bundled and prepared for loading on the client through the utilization of resumability. Despite being in its developmental phase, Qwik has already made remarkable strides, and I, like you, am eager to see what the future holds for this intriguing framework.

If you’re looking to getting better at web development and want to understand the concepts mentioned in this article in an even comprehensive manner, checkout the Full Stack Web Developer learning path at Codedamn.

Happy Learning!

Frequently Asked Questions (FAQs)

Is Qwik frontend or backend?

Qwik is a frontend framework that allows serialization of components and event handlers in order to improve speed and performance.

Is Qwik framework good?

Qwik framework is intuitive in a sense that it is offering progressive hydration and resumability for not only the components but also event handlers as well.

Is Qwik similar to React?

Qwik is similar to react in its look and feel however there is a stark difference in the inner workings of both the frameworks. While the performance is comparable, Qwik is still in development and will have to be tested further in real environments to draw a conclusive comparative analysis.

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