Understanding what work the system makes users wait for, eliminating unnecessary work, making necessary work cheaper, and scheduling work out of the critical path.
Frontend performance is not a checklist of optimisations. It is a way of understanding what work the system is doing, why it is doing it, and who is waiting for it. These articles explore performance as an architectural concern — from React rendering and hydration trade-offs to caching strategies, Core Web Vitals, and the organisational dynamics that make systems slow.
A frontend architecture case study on reducing latency between React routes and Symfony/Twig pages by preserving workflow continuity and reducing hard navigation costs.
2026-06-16Performance isn't just a checklist of optimizations. It's a mental model of elimination, efficiency, and scheduling—a way of understanding what work the system is making the user wait for, and why.
2026-05-29Hydration isn’t just about attaching event listeners. It’s a fragile handover between past and present, where fast paint, interactivity, and continuity collide—and where most bugs aren’t mistakes, but broken assumptions.
2026-01-06A model of elimination, efficiency, and scheduling for understanding what work the system makes users wait for.
Memoisation, render optimisation, state boundaries, and avoiding unnecessary re-renders in component trees.
LCP, INP, and CLS as diagnostic signals — understanding what they measure and how to improve them.
Optimising data-heavy interfaces with virtualisation, progressive loading, and stale-while-revalidate patterns.
Stale-while-revalidate, placeholder data, request deduplication, and cache freshness trade-offs.
Prefetching, persistent state across navigations, and eliminating redundant data fetching between routes.
Server components, streaming, hydration cost, and choosing the right rendering strategy for each surface.
Auditing, deferring, and removing scripts that accumulate silently across teams and ownership boundaries.
Balancing speed with freshness, compliance, and trust in high-stakes financial interfaces.
Performance is a property of the entire system, not a layer owned by frontend engineers. It affects conversion, trust, accessibility, support volume, and operational flow. In fintech especially, latency is not just a UX issue — it affects confidence in financial decisions, increases drop-off during regulated journeys, and creates hidden operational drag as internal tools become slower under pressure.
The best performance work is not about shaving milliseconds from a component. It is about understanding which work matters, which work is waste, and which trade-offs are acceptable for the product, the user, and the domain.