Dev Tools · 10h ago
JS ECS vs OOP: Benchmarking Memory Access Patterns
A developer benchmarks Entity Component System (ECS) vs Object-Oriented Programming (OOP) in JavaScript, finding ECS up to 10x faster due to cache-friendly memory layouts. The test simulates 10,000 entities with position and velocity components. Results highlight how data-oriented design can dramatically improve performance in JavaScript game engines.
Meridian48 take
The benchmark underscores that JavaScript's performance ceiling is often about memory access, not just language speed—ECS patterns may be overkill for most apps but critical for game devs.
javascriptperformance