Vercel Knowledge Base
How to Reduce ISR Writes by Shrinking Cached Output (opens in a new tab)
Reduce ISR Write units by finding large changed routes and removing unnecessary data from their cached output.
Hey, I'm Jonas Herrmannsdörfer
I'm a Developer Success Engineer at Vercel based in Germany. I work at the intersection of product, developer education, and real-world implementation with a strong focus on Next.js and React.
Before joining Vercel, I spent more than eight years building frontend and full-stack products across startups, enterprise teams, and consulting projects. I also run React.js and TypeScript trainings at workshops.de.
I regularly share what I learn through conference talks, workshops, and technical writing.
Latest Writing
View all →Vercel Knowledge Base
How to Move from Time-Based to On-Demand Revalidation (opens in a new tab)
Replace fixed revalidation timers with scoped updates triggered by changes to content, product data, or other application data.
Vercel Knowledge Base
How to Reduce ISR Revalidation Costs (opens in a new tab)
Reduce ISR costs by analyzing Incremental Static Regeneration behavior to find pages and tags that revalidate too often.
Latest Speaking
View all →🎤 Conference📍 London, United Kingdom
Mastering Next.js Cache Components
🎪 React Advanced 2026
🎤 Conference📍 Mannheim, Germany
React neu denken: Activities, automatische Optimierung und der Compiler
🎪 enterJS 2026
🎤 Conference📍 Bad Nauheim, Germany
One Roundtrip to rule them all: GraphQL-Architektur für eine neue User Experience
🎪 programmier.con Web & AI Edition 2025