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This page shows examples of patterns that you might see in a Key Visualizer
heatmap. These patterns can help you troubleshoot specific performance
issues.
Evenly distributed usage
If a heatmap shows a fine-grained mix of dark and bright colors, then reads and
writes are evenly distributed throughout the database. This heatmap
likely represents an effective usage pattern for Datastore mode.
Sequential keys
A heatmap with a single bright diagonal line can indicate a database that uses
strictly increasing or decreasing keys. Sequential keys
are an anti-pattern that can create hotspots.
To learn more about hotspots, see the
best practices page.
When hotspotting, you might observe corresponding elevated latencies
when you compare a Ops/s metric with a latency metric.
Sudden traffic increase
A heatmap with a key range that suddenly changes from dark to bright indicates
a sudden spike in load. If Ops traffic increases faster than
Datastore mode can auto-scale resources, you might see
corresponding elevated latency metrics.
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