qwik VS React

Qwik.js comes with a crazy idea, what if the page is interactive instantly, without waiting for hydration or loading tons of JS? That’s Qwik. It’s built for speed. They call it resumable apps.

Additionally, the Qwik framework has entered the scene, offering an innovative solution to the hybrid model. Qwik is designed to deliver instant loading web applications by using a resumable architecture, which allows web applications to start up with minimal JavaScript. It achieves this by splitting the application code into small, lazy-loaded chunks that only activate when needed, thus optimizing both the performance and user experience.

There are dozens of "better React" web frameworks, so it is impossible to get any traction with that value proposition. That ship has sailed. New frameworks should solve problems that are very difficult in existing frameworks. https://qwik.dev/ is a good example.

Qwik

Vite is a modern build tool created by Evan You, the same developer behind Vue.js. It is designed to provide a faster and leaner development experience for modern web projects. You can use Vite to create front-end projects in seconds: React, Svelte, Lit, Qwik and many others modern frameworks are supported.

Qwik: A new framework designed for optimal performance with built-in SSR support.

I'm curious what users of Svelte think about https://qwik.dev, have many of you been tempted by it? There are a lot of similarities and both are great at keeping file sizes down with a great DX.

This command creates a new Vite project with React. Feel free to replace “react” with “vue” or “vanilla” if that’s more your jam. Svelte, Preact, Qwik, and others are supported, too!

We've got several open-source projects that you might find useful. Qwik, our resumable framework for instant web apps; Partytown, which runs third-party scripts in a web worker; and Mitosis, which lets you write components once and compile to multiple frameworks. These aren't just demos — they're real tools we use and actively develop.

Note: Astro supports a variety of popular frameworks including React, Preact, Svelte, Vue, SolidJS, AlpineJS and Lit with official integrations. While for other frameworks e.g. Angular and Qwik, you may still benefit from this tutorial and you would need to further set up the community maintained framework integrations.

Official React Documentation: react.dev MDN Javascript Documentation: developer.mozilla.org/JavaScript

Early in my career, I struggled to understand how React’s state updates actually worked. Docs gave me the basics, but edge cases around batching were confusing. One weekend, I pulled up the React source code on GitHub and traced how state changes bubbled through the scheduler. Suddenly, the “weird bugs” I hit at work made sense because I wasn’t guessing anymore, I’d seen the engine.

3. Next.js and React (Frontend framework)

My primary passion is backend development, but I wanted to build a user-friendly frontend to complete this project. Given my experience with React, Next.js was the obvious choice due to its excellent documentation and ease of use.

Check out the React 19 Upgrade Guide for more details. Have fun coding, and share in the comments what you’re building with React 19! 🎉

React Official Documentation — Start here for official guides and tutorials

At IVAO, we partially follow micro-services best practices. This means each business group (e.g., Flight tracking, Flight planning, Air Traffic controlling, Training) has its own NestJS API and ReactJS frontend. But we took a shortcut on the DB side, as we have quite some references across systems, especially for user IDs, airports, etc... We decided to have a single MariaDB instance while having a dedicated logical database for each API, so we still have a separation of concerns but we can guarantee data integrity with foreign keys across those databases.

React.js (fast, large ecosystem)

Tools: V0 by Vercel, shadcn/ui, React, Tailwind CSS V0 turns natural language prompts into ready-to-use React + Tailwind UI code. Ask for “a responsive SaaS dashboard with a dark theme and collapsible sidebar” and you get production-ready code instantly, accessible, tweakable, and not locked into rigid templates.