JavaScript Reactivity (Part 3): Coarse vs. Fine-Grained Reactivity Published 2026-06-06, About 10 minute read. Series: JavaScript Reactivity A Global Look Deep vs. Shallow Reactivity Coarse vs. Fine-Grained Reactivity Push vs. Pull Reactivity Reactivity as Cache Invalidation (Coming soon!) Agnostic Reactivity - Does It Exist? (Coming soon!) Reactivity and Scheduling (Coming soon!) In Part 2 we…