Key Visualizer overview
What is Key Visualizer?
Key Visualizer helps you analyze your Spanner data access patterns.
Understanding data access patterns is critical for followingschema design best practices and avoiding hotspots. Hotspotsoccur when too many requests are sent to the same server which saturates theresources of the server and potentially causes high latencies.
With Key Visualizer, you can diagnose common issues that cause hotspots. Itgenerates visual reports to show how data is accessed in your database. Inaddition, you can identify usage patterns over time that are difficult tounderstand otherwise.
What's next
- Learn how toAccess Key Visualizer.
- Find out how touse Key Visualizer to explore a heatmap.
- Understand thepatterns you might see in Key Visualizerheatmaps.
- Read about themetrics you can view in a heatmap.
- Learn about other tools formonitoring an instance
- Watch a video about using KeyVisualizer to diagnose an issue in a similar product.
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Last updated 2026-02-19 UTC.