fix: prevent database circuit failure storm

2026-09-02 20:41:51 +08:00
parent 60d1930447
commit c056a3e741
5 changed files with 43 additions and 9 deletions
@@ -59,6 +59,23 @@ public sealed class DatabaseCircuitBreakerTests
        Assert.Equal(0, DatabaseCircuitBreaker.ConsecutiveFailures);
    }

+    [Fact]
+    public void RecordFailure_while_circuit_is_open_does_not_grow_failure_counter()
+    {
+        for (var i = 0; i < FailureThreshold; i++)
+        {
+            DatabaseCircuitBreaker.RecordFailure();
+        }
+
+        Assert.True(DatabaseCircuitBreaker.IsOpen);
+        var failures = DatabaseCircuitBreaker.ConsecutiveFailures;
+
+        DatabaseCircuitBreaker.RecordFailure();
+        DatabaseCircuitBreaker.RecordFailure(new DatabaseCircuitOpenException("already open"));
+
+        Assert.Equal(failures, DatabaseCircuitBreaker.ConsecutiveFailures);
+    }
+
    [Fact]
    public void IsOpen_after_break_duration_transitions_to_half_open()
    {