Building Scalable React Applications

Designing scalable React apps is about boundaries, composition, and discipline. In this post, we’ll explore pragmatic patterns that help large teams ship faster without losing control.

Principles

• Feature-first organization ("vertical slices")
• Clear data ownership and fetch boundaries
• Co-located concerns: tests, styles, and stories live near code

Project Structure

src/
  app/
  entities/
  features/
  shared/

Performance Tips

1. Memoize where it matters, not everywhere.
2. Prefer server fetching for cacheability and consistency.
3. Split bundles by route and by large feature.

Ship small, test often, and refactor relentlessly.