@Override
    public void decValue() {
        this.value.decrement();
    }
LongOnlineCounter, store current value information.

The difference between it and LongMinGauge or LongMaxGauge is that:
   1. the value is stored by LongAdder type;
   2. this type of metric cannot be reset.
inlong-tubemq/tubemq-core/src/main/java/org/apache/inlong/tubemq/corebase/metric/impl/LongOnlineCounter.java