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It’s possible to do it with Metrics using metrics-servlet but nothing with metrics in Ktor.

If you copy over the code for micrometer in <https://github.com/ktorio/ktor/pull/718>,  you just install it: ```
val globalRegistry = PrometheusMeterRegistry(PrometheusConfig.DEFAULT) // Or dropwizard, check micrometer docs..
		install(Metrics) {
			registry = globalRegistry
			meterBinders = listOf()
		}
``` and use this in your Routing: ```			get("/metrics") {
				call.respondText { (application.feature(Metrics).registry as PrometheusMeterRegistry).scrape() }
			}```, I don't know how similar it is with the original implementation though...

Thanks a lot, I have reach one step further but I am blocked again :disappointed:

```get&lt;MetricsLocation&gt; {
                    val meters = feature(Metrics)
                        .registry
                        .gauges
                        .map { (key, value) -&gt; Pair(key, value.value) }
                    //.mapValues { entry -&gt; entry.value.value }

                    //val katalogStats = KatalogStats.from(meters)
                    call.respond {
                        meters
                    }
                }```

in a route and it works perfect if I am using a call.respondText method and doing the serialization myself with Gson

but if I want to do as it is done in my example, i get a null in the response

I guess Gson has a pb to serialize my object ?

Maybe this is what you need: <http://micrometer.io/docs/concepts#_transforming_metrics>?

Or <http://micrometer.io/docs/concepts#_meter_filters>

If you let the lib do all the work, you could just serve it up with respondText and be done with it :slightly_smiling_face:

If you use my code, just don't forget to configure a histogram for request timing (I hope I'll get to that change soon...)

Sorry Dave, I don’t understand your last sentence. And I try to transform the metrics because I want to expose it as a Json Rest API and not in the for of a flat text.

Who's the consumer of the metrics? <@UD92Q8ZK7>

<@U6P03BM0W> my ops right now with it’s tools but I think we plan to have some tools also on their own to have look on  it

<@U6P03BM0W> I found my mistake :slightly_smiling_face: I was using a lambda with the respond instead of the method call. This way it works nice :slightly_smiling_face: Thanks a lot for your help. I will have a look to timedb, it could be interesting

The most popular one nowadays is Prometheus.