Why We Migrated to Next.js App Router
An depth look at performance gains, caching mechanisms, and layout benefits of Next.js App Router.
Building React web applications has evolved tremendously. The introduction of React Server Components (RSC) in Next.js App Router allows us to fetch data directly in components on the server side, resulting in smaller browser bundles, faster hydration times, and seamless client navigation.
Major Performance Advantages
By shifting page layout compilation to the server, Next.js reduces the Javascript bundles that need to be parsed on low-powered mobile devices. Additionally, automatic image optimization via next/image and server cache layers mean that visual content loads in milliseconds.
"Moving to Next.js App Router reduced our core bundle sizes by 35% and boosted our average mobile Lighthouse score from 71 to 94."
Caching and Incremental Revalidation
Using App Router revalidation configurations, we can cache static pages globally and trigger incremental builds only when updates are committed in our database. This enables high-performance static rendering alongside real-time data accuracy.
