feature: Trend Detection & Alert Suppression Windows

2026-06-18 21:18:13 +08:00
parent e6f7989298
commit 3c54feb38a
31 changed files with 2751 additions and 18 deletions
@@ -0,0 +1,31 @@
+using StackExchange.Redis;
+
+public class AlertSuppressionService : IAlertSuppressionService
+{
+    private readonly IConnectionMultiplexer _redis;
+    private readonly ClinicalMetrics _metrics;
+
+    public AlertSuppressionService(IConnectionMultiplexer redis, ClinicalMetrics metrics)
+    {
+        _redis = redis;
+        _metrics = metrics;
+    }
+
+    public static string SuppressionKey(Guid encounterId, AlertType alertType) =>
+        $"suppress:{encounterId}:{alertType.ToDbString()}";
+
+    public async Task SetSuppressionAsync(
+        Guid encounterId, AlertType alertType, TimeSpan ttl, CancellationToken ct = default)
+    {
+        var cache = _redis.GetDatabase();
+        await cache.StringSetAsync(SuppressionKey(encounterId, alertType), "1", ttl);
+        _metrics.AlertSuppressionsTotal.WithLabels(alertType.ToDbString()).Inc();
+    }
+
+    public async Task<bool> IsSuppressedAsync(
+        Guid encounterId, AlertType alertType, CancellationToken ct = default)
+    {
+        var cache = _redis.GetDatabase();
+        return await cache.KeyExistsAsync(SuppressionKey(encounterId, alertType));
+    }
+}