如何从 spring-boot 千分尺检索指标

Question

I was experimenting with micrometer using below code. How do i configure rate aggregation and get rate-aggregated data from a given counter within the application. By rate aggregated i mean data for previous publishing interval ?

final MeterRegistry myRegistry = new SimpleMeterRegistry();
final Random random = new Random();
for (iteration = 0; iteration < 1000; iteration++)
{
    final int randomNum = random.nextInt(10);
    final Counter myCounter = myRegistry.counter("myTestCounter", "random", Integer.toString(randomNum));
    myCounter.increment();
    Thread.sleep(100);
}
System.out.println("measure = [" + myRegistry.counter("myTestCounter", "random", "0").measure());
System.out.println("count = [" + myRegistry.counter("myTestCounter", "random", "0").count());

Note: I dont want to publish metrics to any monitoring system. I would like to track number of requests given tags per interval (eg, successful/failure requests for a given interval) in application itself and use it for resilience purpose.

Answer 1

Based on the comment from the author of the project, Micrometer intends to export metrics to an external product-ready monitoring system like Prometheus, so your approach is kind of unusual.

Micrometer supports rate-aggregation for monitoring systems which don't support rate-aggregation like InfluxDB and its support comes from StepMeterRegistry . But SimpleMeterRegistry is not one of its subclasses, so you need to create your own one if you want to stick to the approach.

UPDATED:

I created a sample for a custom StepMeterRegistry .