ISR
↔ Incremental Static Regeneration scaling strat to serve skeleton & SSG on-demand per-page basis & keep update with set interval to prevent Stale
Source: nextjs.org/docs/basic
aka ISR, Incremental-Static-Regeneration
Stale
when Static Content no longer up to date
References
On-demand Revalidation
↔ (feat) to manually purge HTTP Cache for specific ISR Page