React 19's compiler and Svelte 5's signals-based reactivity were benchmarked using a 10,000-row stock ticker with 100ms updates. Svelte 5 achieved 3x better median INP (24ms vs 68ms), 36% faster TTI, and 40% lower memory usage. React's compiler eliminates unnecessary re-renders but retains virtual DOM overhead for actual
•19m read time• From sitepoint.com
Table of contents
Table of ContentsWhy This Benchmark Matters NowThe Architecture Under the HoodBenchmark MethodologyThe Benchmark ResultsWhy the React Compiler Doesn't Eliminate the Virtual DOM TaxWhere React 19 Fights Back: Developer Experience and Ecosystem TradeoffsWhere Svelte 5 Pulls Ahead and Where It Falls ShortDecision Framework: Which Framework for Which Use CaseHow to Run These Benchmarks YourselfThe Virtual DOM Is Not Dead, But It Is on NoticeSort: