Resilience4j circuit breaker actuator heath check metrics showing some negative numbers

Resilience4j version: 1.4.0

Java version: 1.8.0_65

I am using resiliance4j circuit breaker with spring boot. in the actuator health point metrics, I am seeing some disparities in slow-calls, a slow failed calls number are coming in negative instead of positive. which is not letting my circuit breaker to open. can anyone help me the significance of this, what these negative values mean?

"endpoint1":{
           "status":"UP",
           "details":{
              "failureRate":"0.0%",
              "failureRateThreshold":"50.0%",
              "slowCallRate":"0.0%",
              "slowCallRateThreshold":"50.0%",
              "bufferedCalls":3500,
              "slowCalls":0,
              "slowFailedCalls":-2682,
              "failedCalls":0,
              "notPermittedCalls":0,
              "state":"CLOSED"
           }
        }

I am using spring boot version 2.2.0, reactor core version: 3.3.5. I am using an annotation-based circuit breaker. and this issue is coming on higher load.

[selly-selly]

@RobWin , Thanks for quick response. I’m using resilience4j-spring-boot2 v1.7.0, spring boot v2.2.1

Seems it happens when slowFailedCalls count < slowCalls or failedCalls “slowCalls”: 6, “slowFailedCalls”: 3, “failedCalls”: 6, From above metrics then as success calls come in: “slowCalls”: 6 → 5 → 4 → 3 → 2 → 1 → 0 → 0 “slowFailedCalls”: 3 → 2 → 1 → 0 → -1 → -2 → -3 → -4 “failedCalls”: 6 → 5 → 4 → 3 → 2 → 1 → 0 → 0

[selly-selly]

Hello~ Any updates about this?