# What is ISR?

Incremental Static Regeneration. Pages are built once and served as static files, then quietly rebuilt in the background on a schedule so content stays reasonably fresh.

## In real work

Set up ISR for the product pages. Revalidate every 60 seconds. Fast static responses, reasonably fresh data.

## Related terms

- [Preview Deployment](https://prompthausapp.com/learn/preview-deployment.md)
- [Edge Network](https://prompthausapp.com/learn/edge-network.md)
- [Cold Start](https://prompthausapp.com/learn/cold-start.md)
- [Fluid Compute](https://prompthausapp.com/learn/fluid-compute.md)
- [Rollback](https://prompthausapp.com/learn/rollback.md)

## How is this different from Googling it?

Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews—then quizzes you until the word sticks. One term a day on iPhone.

- Category: Launch
- HTML: https://prompthausapp.com/learn/isr
- App Store: https://apps.apple.com/us/app/prompthaus-ai-vocabulary/id6776314407