August 25, 2025 1 min read
Incremental Static Regeneration Explained
Concept
Depth: ●●○○○
Understanding ISR: the best of static and dynamic rendering.
Incremental Static Regeneration Explained
ISR gives you static site speed with dynamic content freshness.
How It Works
1. First request: serves cached static page
2. Background: regenerates the page
3. Next request: serves newly generated page
Implementation
When to Use ISR
Perfect for: blog posts, product pages, marketing sites. Content that changes but not in real-time.
Not for: user-specific data, real-time dashboards, frequently changing data.