Why first-load time is critical
In WASM, runtime and assembly downloads happen before meaningful interaction. Longer startup windows increase abandonment.
Performance conclusions are misleading without measuring Time to Interactive under realistic network conditions.
Bundle and lazy-loading balance
Route-based lazy loading cuts initial payload cost compared to shipping every module at startup.
Combining image optimization with self-hosted fonts improves first contentful paint and perceived quality.
Client-side API discipline
Deferring non-critical requests and batching calls improves perceived responsiveness on first screen.
Well-designed ETag and cache-control strategy makes repeat visits significantly lighter and more stable.
Offline tolerance and release discipline
If service-worker and cache-versioning strategy are unclear, old bundles can collide with new API contracts. Client distribution needs to be observable and reversible.
When CDN invalidation, asset fingerprinting, and feature-flag rollout are planned together, new releases open more safely. Performance work should not come at the cost of release confidence.
Explore our frontend architecture approach
