---
title: "ISR Observability: Framework Discrepancies"
description: Understanding ISR Observability with Different Frameworks
url: "https://vercel.com/kb/guide/isr-observability-framework-discrepancies"
published: 2025-11-03
last_updated: 2026-10-16
authors: Zach Hudson
install_vercel_plugin: npx plugins add vercel/vercel-plugin
---

The Observability tab is a powerful tool for reviewing and diagnosing ISR-related usage. For example, when using Next.js, you can view all paths and see detailed metrics on reads and writes:

![Next.js ISR Observability](https://images.ctfassets.net/hjgychtc108g/puqZ7AKJASJtvkVmavSq3/2cfad9a5a2d1b99ec3d201ebde187184/next_isr.png)

However, different frameworks interact with ISR in uniquely, which may affect the level of information displayed in the Observability tab. For example, Nuxt.js only uses a single nitro function, so Vercel can only display this on the dashboard.

To enable full ISR Observability across frameworks, framework developers can integrate the [Vercel Build Output API](https://vercel.com/docs/build-output-api/v3). If your framework doesn't yet support this functionality, consider reaching out to the framework's maintainers to request this enhancement. Collaboration between framework developers and the community can help ensure everyone benefits from more comprehensive observability features.

![Nitro/Nuxt ISR Observability](https://images.ctfassets.net/hjgychtc108g/7p5BqEC52i0LjVDXtAG1D1/2560014afda6d350f2b0be718507c55a/nitro_isr.png)

## More Observability guides

- [How to control AI provider data handling with AI Gateway](/kb/guide/control-ai-provider-data): Prevent AI providers from training on your prompts, enforce zero data retention, and restrict providers and models with Vercel AI Gateway.
- [Troubleshooting Build Error: "Build step did not complete within the maximum of 45 minutes"](/kb/guide/troubleshooting-build-error-build-step-did-not-complete-within-45-minutes): Learn common reasons Vercel builds hit the 45-minute limit and how to reduce build times so your deployments stay fast and reliable.
- [Troubleshooting Builds Failing with SIGKILL or Out of Memory Errors](/kb/guide/troubleshooting-sigkill-out-of-memory-errors): Learn how to troubleshoot builds failing with SIGKILL or Out of Memory errors on a Vercel Deployment.