Frontend & Reactivity
DOM Update Latency: React 19 vs SolidJS vs Svelte 5
Benchmark DOM update latency and fine-grained reactivity performance across React 19, SolidJS, and Svelte 5.
Test Environment
CPUM2 Pro Apple Silicon
RAM16GB LPDDR5
OSmacOS Sonoma
Tooljs-framework-benchmark
Metrics Comparison
Create 10k Rows
Unit: msSolidJS
45★
Svelte 5
52
React 19
110
Detailed Analysis
SolidJS and Svelte 5 (with Runes) provide near-native DOM speeds, outpacing React 19's Virtual DOM diffing algorithm.
React uses VDOM reconciliation, which incurs memory and CPU overhead. SolidJS uses fine-grained proxy signals mapping directly to DOM nodes.
Reconciliation
React diffs VDOM trees
Bottleneck: VDOM diffing time scales with component tree depth.
Architectural Recommendations
- Use Solid/Svelte for extreme performance requirements
- React remains the ecosystem king
Frequently Asked Questions
What is a VDOM?
Virtual DOM is a lightweight JavaScript representation of the actual DOM.