Why did Vue move away from the Virtual DOM?
For over a decade, Virtual DOM has been considered one of the main standards in frontend development. But today, Vue is effectively abandoning it.
In this video, we'll explore how Vue has evolved from the direct reactivity of the first version, through the Virtual DOM era of Vue 2, to today's Vapor Mode, which moves most of the work from runtime to compilation.
We'll discuss:
• Why Vue 2 switched to Virtual DOM
• What problems this architecture has encountered over the years
• How Vue 3 optimized Virtual DOM
• What is Vapor Mode and why is it compared to SolidJS and Svelte
• To what extent do new architectural approaches actually impact the performance of real-world applications
We'll also try to answer the main question: has Virtual DOM truly become a bottleneck in modern interfaces, or is the problem more often rooted in the application code itself?
A list of resources for a deeper dive into the topic is available on my Telegram channel: https://t.me/lysak_online
Timecodes:
00:00 - How revolutionary is Vue?
01:41 - Vue 1.0 - architectural features
03:46 - Vue 2.0 - transition to Virtual DOM
05:23 - Virtual DOM issues
08:17 - Vue Vapor - what's the point
09:27 - Push vs. Pull reactivity
10:42 - How Vapor Mode works
11:46 - Compiler behavior in Vapor Mode
12:39 - Benchmarks
16:04 - Real-world application performance issues