Glossary · Web

What is
Incremental Static Regeneration (ISR)?

A hybrid pattern where static pages are regenerated on-demand or on a timer.

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By Anish· Founder · Vedwix
·

Definition

ISR (a Next.js feature, with similar concepts elsewhere) lets you serve static HTML but regenerate it in the background after a time interval or specific event. The user always gets a fast static response; the content stays fresh. ISR is ideal for very large sites where rebuilding everything is expensive.

Example

An e-commerce site SSGs 100k product pages but uses ISR with a 60-second window to refresh inventory and pricing.

How Vedwix uses Incremental Static Regeneration (ISR) in client work

Used for very large pSEO sites or content with frequent updates.

Building with Incremental Static Regeneration (ISR)?

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Related terms
Static Site Generation (SSG)Pre-rendering web pages to HTML at build time, served as static files.Server-Side Rendering (SSR)Rendering web pages on the server before sending HTML to the client.CDNContent Delivery Network — globally distributed servers that cache and serve content close to users.
More Web terms
StorybookWebServer-Side Rendering (SSR)WebStatic Site Generation (SSG)WebEdge RenderingWebCDNWebLCP (Largest Contentful Paint)Web

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