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Write utilization now available in ISR Observability

UpdateVerifiedAdded Sep 22, 2026

The ISR Observability page now shows Observability Plus subscribers a write utilization metric, helping identify routes that regenerate often but receive few requests. Write utilization is the ratio of cached requests to ISR writes.

Read Vercel's release notes

https://vercel.com/changelog/write-utilization-now-available-in-isr-observability

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