An introduction into distributed tracing with Spring and the observation API from Micrometer.

1. Observability 101 with Spring
and Micrometer

2. Observability

4. @nele_lea
@nlea@social.anoxion.de
@nlea

5. Telemetry Data

6. Logs
2023-06-27T21:47:55.781+02:00 INFO [observability-demo,,]
47578 --- [nio-8080-exec-4] c.n.o.demo.SimpleLoggingHandler
: Stopping context name='http.server.requests',
contextualName='http get /randomFact', error='null',
lowCardinalityKeyValues=[exception='none', method='GET',
outcome='SUCCESS', status='200', uri='/randomFact'],
highCardinalityKeyValues=[http.url='/randomFact'], map=[class
io.micrometer.core.instrument.LongTaskTimer$Sample='SampleImp
l{duration(seconds)=-1.0E-9, duration(nanos)=-1.0,
startTimeNanos=433274699379541
}',

7. Metrics

8. Traces

10. Other Components

11. Service A
ServiceB
Service C
Service Invocation
Message Broker

12. Worker 1
POD 2
POD 1
Worker 2 POD 2
ServiceB
Service C
Message Broker
Kubernetes
Master
API
Server
Sidecar

13. Observability on Application Layer

14. Components
Application
Instrument
Telemetry data
Query-,
alerting-,
visualization
Platform
Observibility
data backend

15. OpenTelemetry
Application
Instrument
Telemetry data
- Cncf project
- Merged OpenCencus and
OpenTracing
- Specifications,
Protocols, SDKs and
APIs
- Vendor neutral
- No telemetry backend
For Java:
- Auto agent
- Java SDK and API

16. Components
Application
Instrument
Telemetry data
Query-,
alerting-,
visualization
Platform
Observibility
data backend

17. Auto Instrumentation

18. Ice Cream Recommender
Input
Service
Location
Service
Weather
Service
REcommender
Service
Kafka

19. IDE Excursion!

20. Java Agent
- No code changes
- Wide support for a lot of different libraries
and frameworks
- “Out of the box”- observability

21. Manual Instrumentation

22. Micrometer
“Micrometer provides a simple facade over the
instrumentation clients for the most popular
observability systems, allowing you to instrument
your JVM-based application code without vendor
lock-in. Think SLF4J, but for observability.”

23. Observation API
“The idea of its founding was that we want the
users to instrument their code once using a single
API and have multiple benefits out of it (e.g.
metrics, tracing, logging).”

24. Observation API
ObservationRegistry observationRegistry = ObservationRegistry. create();
observationRegistry
.observationConfig()
.observationHandler( new SimpleLoggingHandler());
Observation observation =
Observation.createNotStarted(“sample”, observationRegistery);
observation.observe(() -> {
//action to be observed
});

25. Observation Lifecycle

26. Micrometer & Spring
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

27. IDE Excursion!

28. Manual
- Create spans and metrics according to business
logic
- Application code changes

29. Observability Data BackEnd

30. Components
Application
Instrument
Telemetry data
Query-,
alerting-,
visualization
Platform
Observibility
data backend

31. OBSERVABILITY SUITE

32. Autometrics

33. ç
Autometrics
Instrument
Metrics BackEnd
latency, error- and request
rate AM Explorer
Application
Functions
Query-,
alerting-,
visualization
Platform
https://github.com/autometrics-dev

36. Observability 101 with Spring
Instrumentation
Backends
Combined View
Talk Spring i/o 2023:
Observability of Your Application
by Marcin Grzejszczak & Tommy Ludwig

37. @nele_lea
@nlea@social.anoxion.de
@nlea
Photo by Pawel Janiak on Unsplash