Arrow Resilience Kit/com.sorinirmies.arrow.resiliencekit.stm/StmGauge

StmGauge

STM-based gauge that tracks a current value with min/max bounds.

Automatically tracks the minimum and maximum values ever set, useful for monitoring metrics like concurrent request counts.

Basic usage:

val gauge = StmGauge.create(0.0)
atomically { with(gauge) { set(42.0) } }
println(gauge.value()) // 42.0

Tracking min/max:

val gauge = StmGauge.create(0.0)
atomically { with(gauge) { set(10.0) } }
atomically { with(gauge) { set(5.0) } }
atomically { with(gauge) { set(8.0) } }

atomically {
    with(gauge) {
        println("Min: ${min()}") // 0.0
        println("Max: ${max()}") // 10.0
        println("Current: ${current()}") // 8.0
    }
}