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The Truth about Rust/WebAssembly Performance

Greg Johnston · talk · Watch on YouTube

Web developmentC, C++, Rust, Go & systems languagesSoftware performance & optimization

What it is

Leptos creator Greg Johnston examines Rust/WebAssembly frontend frameworks against JavaScript frameworks using the JS framework benchmark. He argues that WASM is no longer too slow for DOM-heavy rendering.

Why Hacker News recommends it

Cited as evidence that DOM access is not the bottleneck for WebAssembly, and as an explanation of signals-based updates versus virtual DOM.

  • 2 people recommended it
  • 2 different months
  • 0 strong recommendations
  • first 2023, last 2026

What HN commenters said

  1. “did a pretty good video about this a few weeks ago[0]”

    Explains DOM binding costs eat WASM compute gains.

    pdpi, 2023-04 · Recommendation · in “Can Rust Beat JavaScript in 2023?”

  2. “This video might be helpful.”

    Helps understand signals-based DOM updates versus virtual DOM.

    theironhammer, 2023-07 · Recommendation · in “Ask HN: Real world Svelte speed difference compared to virtual DOM frameworks?”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: webassembly, rust, leptos, dom, benchmarks, signals

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