ISR: The Best of Both Worlds in Rendering
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TLDR:
ISR gives you static speed with controlled freshness: pre-rendered pages plus revalidate windows and on-demand invalidation. This guide covers how ISR works in Next.js, how to configure it in the Pages and App Router, when to use time-based vs tag-based revalidation, and how Feature-Sliced Design keeps ISR-driven codebases modular and maintainable.