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Port baseline engine and anomaly detection to Dashboard #793

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Merged
erikdarlingdata merged 3 commits into from
Apr 7, 2026
Merged

Port baseline engine and anomaly detection to Dashboard #793

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0260844
Replace all muted/dim text colors with foreground colors for readability
erikdarlingdata Apr 6, 2026
9acf4f6
Add dynamic baselines and anomaly detection to Lite (#692, #693)
erikdarlingdata Apr 7, 2026
e2dfcdb
Port baseline engine and anomaly detection to Dashboard (Phases 5-8)
erikdarlingdata Apr 7, 2026
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4 changes: 3 additions & 1 deletion Dashboard/Analysis/AnalysisService.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ public class AnalysisService
private readonly InferenceEngine _engine;
private readonly SqlServerDrillDownCollector _drillDown;
private readonly SqlServerAnomalyDetector _anomalyDetector;
private readonly SqlServerBaselineProvider _baselineProvider;

/// <summary>
/// Minimum hours of collected data required before analysis will run.
Expand Down Expand Up @@ -60,7 +61,8 @@ public AnalysisService(string connectionString, IPlanFetcher? planFetcher = null
_graph = new RelationshipGraph();
_engine = new InferenceEngine(_graph);
_drillDown = new SqlServerDrillDownCollector(connectionString, planFetcher);
_anomalyDetector = new SqlServerAnomalyDetector(connectionString);
_baselineProvider = new SqlServerBaselineProvider(connectionString);
_anomalyDetector = new SqlServerAnomalyDetector(connectionString, _baselineProvider);
}

/// <summary>
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9 changes: 6 additions & 3 deletions Dashboard/Analysis/FactScorer.cs
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Expand Up @@ -308,9 +308,12 @@ private static double ScoreBadActorFact(Fact fact)
/// </summary>
private static double ScoreAnomalyFact(Fact fact)
{
if ( fact.Key.StartsWith("ANOMALY_CPU_SPIKE" , StringComparison.OrdinalIgnoreCase)
|| fact.Key.StartsWith("ANOMALY_READ_LATENCY" , StringComparison.OrdinalIgnoreCase)
|| fact.Key.StartsWith("ANOMALY_WRITE_LATENCY", StringComparison.OrdinalIgnoreCase)
if ( fact.Key.StartsWith("ANOMALY_CPU_SPIKE" , StringComparison.OrdinalIgnoreCase)
|| fact.Key.StartsWith("ANOMALY_READ_LATENCY" , StringComparison.OrdinalIgnoreCase)
|| fact.Key.StartsWith("ANOMALY_WRITE_LATENCY" , StringComparison.OrdinalIgnoreCase)
|| fact.Key.StartsWith("ANOMALY_BATCH_REQUESTS", StringComparison.OrdinalIgnoreCase)
|| fact.Key.StartsWith("ANOMALY_SESSION_SPIKE" , StringComparison.OrdinalIgnoreCase)
|| fact.Key.StartsWith("ANOMALY_QUERY_DURATION", StringComparison.OrdinalIgnoreCase)
)
{
// Deviation-based scoring: 2σ = 0.5, 4σ = 1.0
Expand Down
1,251 changes: 708 additions & 543 deletions Dashboard/Analysis/SqlServerAnomalyDetector.cs
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