The document discusses monitoring Spring Boot and Micronaut microservices using Micrometer, emphasizing the importance of metrics over logs for system health measurement. It outlines goals for defining metrics, integrating with Prometheus for storage, and visualizing data using Grafana. The presentation also highlights the advantages of using Micrometer, including vendor neutrality and ease of integration with various monitoring systems.

1. Monitoring your Spring Boot and Micronaut microservices
with Micrometer
JCON2020#
www.jcon.one
Ko Turk
Senior Java Developer
Our Partners 2020:

2. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
You’re part of a racing team

4. Sounds silly right?
But what if we don’t have this kind of information?

5. @KoTurk77@KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
But why don’t we (developers) think about proper monitoring?

6. @KoTurk77@KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Title Text
https://formulaf1results.blogspot.com/2020/01/f1-crash-wallpaper.html
Application X Application Y
Backend
(still driving but slow)

7. @KoTurk77@KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
If that’s happening…..

8. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Of course you can log it but…..

9. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
A log is an event that happened
A metric is a measurement of the health of a system.
https://www.sumologic.com/blog/logs-metrics-overview/

10. @KoTurk77@KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
That’s where
Micrometer comes in

11. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Introduction

12. Working
for Blue4IT
@Rabobank

14. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
https://www.signifytechnology.com/blog/2019/09/whats-your-tech-stack

15. Java 14Spring Boot
Typescript
Angular
Cloud Foundry
Pipeline as code Micrometer

16. Speaking
about IDEs and Micrometer

17. Likes to drive
the trial bike

18. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
UtrechtJUG

20. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Goals
Define the metrics
Create them in Micrometer
Save it to Prometheus
Visualize with Grafana
(Create the teams strategy)
(Preparing the car/race)
(The teams Pitwall)

21. https://www.redbull.com/nl-nl/red-bull-racing-zet-de-fabrieksdeuren-open
Create the teams strategy

22. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
What do we want to monitor?

24. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
How to be good in DevOps?

25. https://landing.google.com/sre/sre-book/toc/index.html

26. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
It’s about
• Searching for race factors —> Service Level Indicators
• Creating tactics —> Service Level Objectives
• Creating a strategy —> Service Level Agreement

27. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Racing Factors —> Defining an indicator (SLI)
• pitstop
request latency
How long does it take to do a pitstop
How long does it take to return a response

28. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Tactics —> Defining an objective (SLO)
not slower then 8 seconds
service x not longer then 0.1 seconds
• pitstop
request latency

29. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Strategy —> Defining an agreement (SLA)
• 2 pitstops less then x seconds

30. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Goals
Define the metrics
Create them in Micrometer
Save it to Prometheus
Visualize with Grafana
(Create the teams strategy)
(Preparing the car/race)
(The teams Pitwall)

32. Micrometer for the win!
But what is it?

33. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
SLF4J only for metrics

34. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Reasons to use Micrometer
• No vendor lock-in
• It’s Pivotal VMWare Tanzu
• Easy integration in Spring Boot
• So also support in Cloud Foundry
• Simple to use
• You can choose your own database / monitoring system
• You can define your own set of metrics
• But you get a lot for free

35. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Micrometer is included in Spring Boot 2 actuator
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

36. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Extra dependency for Spring Boot 1.5.x
I<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-spring-legacy</artifactId>
</dependency>

37. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
And also for Micronaut

38. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Pre-configured Bindings
• Instrumentions of:
• caches
• class loader
• garbage collection
• processor utilisation
• thread pools
• and more

40. https://i.ytimg.com/vi/eVpRNi5VEDo/maxresdefault.jpg
Demo time

42. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Long Task Timer

43. https://i.pinimg.com/originals/fb/5b/98/fb5b98edf68000f44e89d6428a3e2c65.jpg

44. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Timer

45. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
https://s1.cdn.autoevolution.com/images/news/gallery/red-bull-racing-beats-record-to-set-new-fastest-pit-stop-in-the-history-of-f1_2.jpg

46. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Counter

47. https://www.wallpaperflare.com/static/467/219/735/mercedes-amg-f1-w07-hybrid-formula-1-testing-wallpaper.jpg

48. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Gauge

49. https://cdn.24.co.za/files/Cms/General/d/4338/1678467a9d9149b983f38424014fb2c0.jpg

50. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
About security
• Please implement spring security
• Otherwise you will expose your endpoint to others
• And don’t forget to add it in your database config!
https://www.baeldung.com/spring-security-basic-authentication
https://egkatzioura.com/2020/05/07/spring-boot-and-micrometer-with-prometheus-part-6-securing-metrics/

51. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Goals
Define the metrics
Create them in Micrometer
Save it to Prometheus
Visualize with Grafana
(Create the teams strategy)
(Preparing the car/race)
(The teams Pitwall)

52. @KoTurk77@KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Where to store the metrics?
Which database should I use?

53. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Databases
• Prometheus
• Graphite
• Atlas
• KairosDB
Persistent or not persistent?

54. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
If you want to expose to prometheus
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-prometheus</artifactId>
</dependency>

55. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Or Graphite
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-graphite</artifactId>
</dependency>

57. @KoTurk77@KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
How to configure your application
with prometheus

58. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Goals
Define the metrics
Create them in Micrometer
Save it to Prometheus
Visualize with Grafana
(Create the teams strategy)
(Preparing the car/race)
(The teams Pitwall)

59. https://blog.purestorage.com/wp-content/uploads/2016/07/Pure-MBF1-Pitwall-v6.jpg

60. @KoTurk77@KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
How to visualise the application metrics?
Which monitoring system to use?

61. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Systems
• Grafana
• Datadog
• Dynatrace
• Instant
• WaveFront
• and many more

62. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Let’s deep dive into Grafana

63. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Long Task Timer (duration)

64. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Timer (count)

65. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Timer (max)

66. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Gauge

67. @KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Bindings

69. @KoTurk77@KoTurk77 The Battle of the IDEs #Devnexus@KoTurk77Monitoring your Spring Boot and Micronaut microservices with Micrometer
Title Text

71. All examples you can find at:
https://github.com/KoTurk/micrometer-race-demo
@KoTurk77
Thank you for listening