Optimising React Performance in Production

Performance issues rarely show up during development. Everything feels fast locally — until real users, real data and real network conditions come into play.

While working on production systems like OneCap, improving frontend performance became a key priority. Even small delays had noticeable effects on user engagement and retention.

The Problem

As applications grow, so do their performance bottlenecks. Unnecessary re-renders, slow API responses and inefficient data handling can quickly degrade user experience.

• Slow page load times
• Laggy UI interactions
• Heavy components re-rendering too often

Key Optimisations

Improving performance required a combination of frontend and backend improvements.

• Memoisation using React.memo and useMemo
• Code splitting and lazy loading
• Reducing unnecessary API calls
• Efficient state management

Caching Strategy

One of the biggest wins came from improving caching strategies. By caching frequently requested data and avoiding redundant network calls, we significantly reduced load times.

This was especially important for users on slower networks, where every request matters.

UX Impact

Performance is not just a technical concern — it directly affects how users perceive your product.

• Faster load times improved engagement
• Smoother interactions increased user satisfaction
• Reduced friction improved retention

Key Takeaway

Performance should be treated as a core product feature, not an afterthought. The best experiences come from combining efficient engineering with thoughtful design.