Add performance instrumentation, caching, and parallelization#509
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erikdarlingdata merged 2 commits intodevfrom Mar 10, 2026
Merged
Add performance instrumentation, caching, and parallelization#509erikdarlingdata merged 2 commits intodevfrom
erikdarlingdata merged 2 commits intodevfrom
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- Port MethodProfiler and QueryLogger from Dashboard to Lite for identifying slow methods and DuckDB queries (500ms threshold, daily rotating logs with 7-day cleanup) - Add 5-minute server inventory cache to both Dashboard and Lite to eliminate 12s repeat loads on FinOps tab revisits - Parallelize LoadPerServerDataAsync (4 sub-loads) and LoadUtilizationAsync (4 inner queries) with Task.WhenAll in both Dashboard and Lite - Add query timing instrumentation to 7 LocalDataService methods - Fix Plan Viewer PreviewMouseDown stealing focus from ComboBox and DataGrid in Dashboard (complements Lite fix from #508) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Task.WhenAll didn't improve performance (same DuckDB read lock bottleneck) and risks concurrency issues at scale. Reverted to sequential awaits in LoadPerServerDataAsync and LoadUtilizationAsync in both Dashboard and Lite. Caching and instrumentation retained. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
LoadPerServerDataAsync(4 sub-loads) andLoadUtilizationAsync(4 inner queries) now useTask.WhenAllin both appsLocalDataServicemethods for DuckDB query performance visibilityPreviewMouseDownno longer steals focus from ComboBox/DataGrid (complements Lite fix from Fix ComboBox focus steal in plan viewer + DOP 2 skew threshold #508)Test plan
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