Performance is a feature. Users expect instant interactions, and as an engineer, your job is to deliver them through technical discipline.
1Zero-Config vs. Deep Customization
Vite has changed the game with near-instant dev starts, but mid-level developers still need to understand Webpack configuration for complex legacy migrations and custom loaders.
2The Bundle Diet
Analyzing your bundle size isn't a one-time task. Using tools like 'Webpack Bundle Analyzer' helps you identify heavy third-party libraries and replace them with lighter alternatives like 'date-fns'.
3Content Delivery Strategy
Static assets should live on a CDN. Using proper cache-control headers and 'Immutable' filenames (with hashes) ensures that users only download what has changed since their last visit.
