Telemetry
Collect Metrics and Traces with minimal code
Battle-tested, free and open-source instrumentation for distributed systems.
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Automatic Instrumentation
Setup with a few lines of code and Kamon will do the rest for you!
Kamon automatically collects metrics and traces from Akka, Play Framework and other JVM frameworks.
See available instrumentations
Instrument Once, Report Anywhere
Send metrics and traces wherever you want. Switch between Kamon APM, Prometheus, Zipkin and more at any time, without code changes.
See available reporters
Code Your Own Instrumentation
Collect your own metrics, define custom traces and propagate context with Kamon core APIs.
Metrics
Track latency, errors and any business metric with high-definition histograms.
Distributed Tracing
Trace operations through any service and application component.
Context Propagation
Propagate userID, requestID and any correlation data between threads and services.
// One-Liner metric and increment
Kamon.counter("app.orders")
.withoutTags()
.increment()
// Fully define a metric
val DataSent = Kamon.counter(
name = "network.data.sent",
description = "Counts data sent out",
unit = bytes
)
// Tag and use an instrument
val sentOnInterface = DataSent
.withTag("interface", "eth0")
sentOnInterface.increment(512)
// Adding tags to the SpanBuilder
val span = Kamon.spanBuilder("find-users")
.tag("string-tag", "hello")
.tag("number-tag", 42)
.tag("boolean-tag", true)
.start()
// Adding tags to the Span.
span
.tag("other-string-tag", "bye")
.tag("other-number-tag", 24)
.tag("other-boolean-tag", false)
// After this point no tags can be added.
span.finish()
// Creating a Context with two keys
val context = Context()
.withKey(UserID, "1234")
.withKey(SessionID, Some(42))
// Reading values from a Context
val userID: String = context.get(UserID)
val sessionID: Option[Int] = context.get(SessionID)
// The default value is returned for non-existent keys
val requestID: Option[String] = context.get(RequestID)
Is Kamon Telemetry free?
Yes. Kamon Telemetry is and will always be Free and Open Source.
Have questions?
Head over to our Github discussions if you need help with your setup, have a feature request or want to share your experience.
Want to learn more?
Learn how to create your own metrics, configure reporters and understand everything about Kamon in our Docs section.
