The document discusses Java licensing, OpenJDK, GraalVM, Quarkus, Kubernetes, MicroProfile, and best practices for developing cloud native Java applications. It provides an overview of licensing changes to Java, alternatives to Oracle JDK including Amazon Corretto and Eclipse OpenJ9. It also summarizes GraalVM capabilities, introduces Quarkus as a framework for building container-based applications, and discusses using Kubernetes for deploying Java applications. MicroProfile specifications and Eclipse projects are reviewed. The presentation concludes with discussions of architecture, processes, tooling and monitoring considerations for cloud native development.

1. 1

2. 2
Allan Rodrigo Leite
Product Manager - TOTVS

3. 3
Novidades Java,
GraalVM e
Quarkus
01

4. 4Who we are 4
Winston Spencer
Sonnesen
Product Owner - TOTVS
Jeferson Francisco
Research & Developer Engeneering -
fluig
Thiago Almeida Weber
Software Architect - TOTVS

5. 5
Licenciamento
Java e
OpenJDK

6. 6Licenciamento do Java
Java 8 e anteriores
A cada 3 anos mais ou menos era lançada uma nova versão
• Demora na entrega de novas funcionalidades
• Demora na correção de bugs
Fim das atualizações públicas
• Janeiro/2019 - Uso comercial
• Dezembro/2020
Fonte: https://www.oracle.com/technetwork/java/java-se-support-roadmap.html

7. 7Licenciamento do Java
Java 9 e
posteriores
Lançado em Setembro/2017
• Lançamento de uma nova
versão a cada 6 meses
Features Releases
• Versões maiores onde são
disponibilizados novos recursos
da linguagem
Updates Releases
• Acontecem 2x dentro do período
• Atualizações de segurança
• Correções de bugs
Fonte: https://www.oracle.com/technetwork/java/java-se-support-roadmap.html

8. 8Mais confuso do que o John Travolta com máscara do Nicolas Cage

9. 9Oracle OpenJDK Builds
http://jdk.java.net

10. 10AdoptOpenJDK Builds 10
http://adoptopenjdk.net

11. 11Além da JVM da Oracle
Amazon Corretto
• Distribuição gratuita
• Multiplataforma
• Pronto para produção do Open Java Development Kit (OpenJDK)
• Inclui suporte de longo prazo
• Amazon utiliza o Corretto internamente em milhares de serviços de produção
• Certificado como compatível com o padrão Java SE
Fonte: https://aws.amazon.com/pt/corretto/

12. 12Além da JVM da Oracle
Eclipse OpenJ9
• Mantido pela IBM e pela comunidade
• Suporte multiplataforma
• Alto desempenho
• Sem custo
Fonte: https://projects.eclipse.org/projects/technology.openj9/who

13. 13The Future of Java EE
• Oracle contributed GlassFish and the Java EE APIs and TCKs to Jakarta EE
• The Jakarta EE Working Group was formed and supporting committees to provide governance to
the community and facilitate collaboration.
• The Eclipse Foundation Specification Process was created, and customization created and
approved for the Jakarta EE Specification Process.
• Specification projects are being created and work is underway now within the community to deliver
the Jakarta EE 8 release later this year.
• javax.* namespace was moved to the jakarta.* namespace

14. 14
Eclipse MicroProfile
What is Eclipse MicroProfile

15. 15Community - individuals, organizations and vendors

16. 16Current MicroProfile implementations

17. 17Sep, 2016
MicroProfile 1.0
JAX-RS 2.0JSON-P 1.0CDI 1.2

18. 18Aug, 2017
JAX-RS 2.0JSON-P 1.0CDI 1.2
Config 1.0
MicroProfile 1.1
= No change from last release
= New

19. 19Sep, 2017
= Updated
= No change from last release
= New
JAX-RS 2.0JSON-P 1.0CDI 1.2
Config 1.1
Fault
Tolerance 1.0
JWT
Propagation 1.0
Health
Check 1.0
Metrics 1.0
MicroProfile 1.2

20. 20Jan, 2018
JAX-RS 2.0JSON-P 1.0CDI 1.2 Config 1.2
Fault
Tolerance 1.0
JWT
Propagation 1.0
Health
Check 1.0
Metrics 1.1
Open Tracing
1.0
Open API 1.0 Rest Client 1.0
MicroProfile 1.3
= Updated
= No change from last release
= New

21. 21Jun, 2018
JAX-RS 2.0JSON-P 1.0CDI 1.2 Config 1.3
Fault
Tolerance 1.1
JWT
Propagation 1.1
Health
Check 1.0
Metrics 1.1
Open Tracing
1.1
Open API 1.0 Rest Client 1.1
MicroProfile 1.4
= Updated
= No change from last release
= New

22. 22Jun, 2018
JAX-RS 2.1JSON-P 1.1CDI 2.0
Config 1.3
Fault
Tolerance 1.1
JWT
Propagation 1.1
Health
Check 1.0
Metrics 1.1
Open Tracing 1.1 Open API 1.0 Rest Client 1.1
JSON-B 1.0
MicroProfile 2.0
= Updated
= No change from last release
= New

23. 23Oct, 2018
JAX-RS 2.1JSON-P 1.1CDI 2.0
Config 1.3
Fault
Tolerance 1.1
JWT
Propagation 1.1
Health
Check 1.0
Metrics 1.1
Open Tracing 1.2 Open API 1.0 Rest Client 1.1
JSON-B 1.0
MicroProfile 2.1
= Updated
= No change from last release
= New

24. 24Jan, 2019
JAX-RS 2.1JSON-P 1.1CDI 2.0
Config 1.3
Fault
Tolerance 2.0
JWT
Propagation 1.1
Health
Check 1.0
Metrics 1.1
Open Tracing
1.3
Open API 1.1 Rest Client 1.2
JSON-B 1.0
MicroProfile 2.2
= Updated
= No change from last release
= New

25. 25Jun, 2019
JAX-RS 2.1JSON-P 1.1CDI 2.0
Config 1.3
Fault
Tolerance 2.0
JWT
Propagation 1.1
Health
Check 2.0
Metrics 2.0
Open Tracing 1.3 Open API 1.1 Rest Client 1.3
JSON-B 1.0
MicroProfile 3.0
= Updated
= No change from last release
= New

26. 26How to start with MicroProfile

27. GraalVMTM
Run Programs
Faster Anywhere
https://www.graalvm.org/

28. 28
“One VM to rule them ALL…”
GraalVM
POLYGLOT
Zero overhead interoperability between programming languages allows you to
write polyglot applications and select the best language for your task.
NATIVE
Native images compiled with GraalVM ahead-of-time improve the startup time
and reduce the memory footprint of JVM-based applications.
DEFINITION
GraalVM is a universal virtual machine for running applications written in
JavaScript, Python, Ruby, R, JVM-based languages like Java, Scala, Groovy,
Kotlin, Clojure, and LLVM-based languages such as C and C++.
EMBEDDABLE
GraalVM can be embedded in both managed and native applications. There are
existing integrations into OpenJDK, Node.js and Oracle Database.
Top 10 Things To Do With GraalVM

29. 29
Components:
- SDK
- Compiler
- Truffle
- Tools
- Substrate VM
- Sulong
- TRegex
- VM
GraalVM
STARTUP TIME PEAK THROUGHPUT
MAX LATENCYMEMORY FOOTPRINT
PACKAGING SIZE

30. Is a framework that allows ahead-of-time (AOT)
compilation of Java applications under closed-world
assumption into executable images or shared objects
(ELF-64 or 64-bit Mach-O).
SUBSTRATE
VM
https://github.com/oracle/graal/tree/master/substratevm

31. 31VM parameters

32. Q U A R K U
SSupersonic Subatomic
Java
https://quarkus.io/

33. 33Container first
https://quarkus.io/
Quarkus tailors your application for GraalVM and HotSpot.
Amazingly fast boot time, incredibly low RSS memory (not just heap
size!) offering near instant scale up and high density memory utilization
in container orchestration platforms like Kubernetes.

34. 34Developer joy
https://quarkus.io/
Combine both the familiar imperative code and the non-blocking
reactive style when developing applications.
A cohesive platform for optimized developer joy:
● Unified configuration;
● Zero config, live reload in the blink of an eye;
● Streamlined code for the 80% common usages, flexible for the 20%;
● No hassle native executable generation.

35. 35Best of breed libraries and standards
https://quarkus.io/
Quarkus brings a cohesive, fun to use full-stack framework
by leveraging best of breed libraries you love and use wired on a standard backbone.

36. 36Java & JVM 2019-Q3 graph
http://infoq.link/java2019

37. 37Live demo
WHAT COULD GO
WRONG?

38. 38
Do zero a nuvem
com Java e
Kubernetes
02

39. 39Who we are 39
Sandro Giacomozzi
Software Architect - fluig
Alisson Medeiros
Research & Developer Engeneering - fluig
Eduardo Filipe Gomes
Software Architect - TOTVS
Roger Steuernagel
Software Architect - TOTVS

40. 40Kubernetes for Java developers

41. 41
The ​​technology area is cyclical, from time to time
the same technologies come back, with different
names (Heidemann, Vanei)
Series available at https://dev.to/sandrogiacom/kubernetes-for-java-developers-setup-41nk
Kubernetes for Java developers

42. 42
Kubernetes is a portable, extensible open-source platform for
managing containerized workloads and services, that facilitates
both declarative configuration and automation.
It has a large, rapidly growing ecosystem.
Kubernetes services, support, and tools are widely available.
https://kubernetes.io/docs/concepts/overview/what-is-kubernetes/
What is Kubernetes

43. 43
• Docker
• Minikube
• Kubectl
• VirtualBox
• GNU make (recommended)
https://github.com/sandrogiacom/k8s
Setup

44. 44Before run
Clone demo app
https://github.com/sandrogiacom/java-kubernetes

45. 45Step one – Standalone App
https://www.youtube.com/watch?v=X-h7Tbq5C4U

46. 46Step two – Docker App

47. 47Step two – Docker App
https://www.youtube.com/watch?v=gPu1xJji6Hw

48. 48Step three – App on Kubernetes

49. 49Local running

50. 50Start Minikube
minikube -p dev.to start --cpus 2 --memory=4098
minikube -p dev.to addons enable ingress
minikube -p dev.to addons enable metrics-server
kubectl create namespace dev-to
https://www.youtube.com/watch?v=QUaAOBLy4y0

51. 51And
K8s (K - ubernete - s)
• Deployment
• Pods
• Replica Sets
• Services
• Ingress

52. 52Deploying database and application
https://github.com/sandrogiacom/java-kubernetes/blob/master/kubernetes/mysql/mysql-deployment.yaml
https://github.com/sandrogiacom/java-kubernetes/blob/master/kubernetes/app/app-deployment.yaml

53. 53Deploying database and application
1.https://www.youtube.com/watch?v=mp22hUMskZo
2.https://www.youtube.com/watch?v=8xARo8XhMa4
3.https://www.youtube.com/watch?v=bbUupigXKh4
4.https://www.youtube.com/watch?v=zvGhoV-tzwY

54. 54Scaling Application
https://www.youtube.com/watch?v=xi2Ji1k3yOY

55. 55Deplying database
kubectl apply -f kubernetes/mysql/

56. 56Build docker image local
eval $(minikube -p dev.to docker-env)
docker build --force-rm -t java-k8s .

57. 57Deploying app
kubectl apply -f kubernetes/app/

58. 58Ingress – application with friendly access
https://www.youtube.com/watch?v=-MVPY_mI-so

59. 59
Preparing docker and kubernetes to allow
debugging
Debug

60. 60Debug

61. 61Debug

62. https://www.youtube.com/watch?v=EYv_V73ZoZ8

63. 63
•Use JRE images instead of JDK
•Automate everything possible
•Use environment variables
•Health check
•Application info
•Monitoring / Logs
Good practices

64. 64Alinhamento e autonomia 🡪 juntos and shallow now

65. 65Ferramentas

66. 66Testes sempre, desde o unitário até o mais próximo de produção

67. 67Ferramentas

68. 68Todo mundo tem um plano até tomar o primeiro soco na cara - Mike Tyson

69. 69Monitoramento, rastreabilidade e alertas

70. 70Visão de arquitetura
Processo de
Desenvolvimento
Processos, metodologias
e padrões para o
desenvolvimento.
(Pipelines e
documentações)
3
Plataforma
Componentes de
infraestrutura para suportar
a operação (plataforma) e
desenvolvimento
(facilitadores para a
abstração no framework).
2
Framework Java
Framework Java seguindo
a visão de arquitetura do
TOTVS Platform com
suporte a boas práticas de
desenvolvimento de
aplicações cloud nativas
(DDD, TDD e BDD, Event
Sourcing, CQRS).
1

71. 71Componentes de framework
Repositório
JSON
Segurança
(Oauth2 e
JWT)
API de Mensageria
(Spring Cloud
Stream e RabbitMQ)
Domain Driven Design,
Event Sourcing e
CQRS
Internacionalização
e Localização
Multi-Tenância
(Database,
Schema e
Discriminator)
Customização e
Personalização
Orquestração
(BPMN,
DMN, CMMN
e Flowable)
SPRING CLOUD
FRAMEWORK
Logging
Coreografia

72. 72Componentes de plataforma
Users
System
s
Things
Ingress
(APIManager)
KubernetesDNS
(ServiceDiscovery)
Identity
(AuthenticationService)
Kubernetes
(Container Orquestration)
Request #3
(Micro Service)
Accountability #1
(Micro Service)
Query #1
(Micro Service)
Request #4
(Micro Service)
Query #2
(Micro Service)
Account #1
(Micro Service)
RabbitMQAMQP
(MessageBroker)
Kubernetes
Secrets&Config
(ServiceConfig)
TOTVSRAC
(AuthorizationService)
Istio,Prometheus&
Grafana
(Monitoring&Alert)
ELK
(Logging)
TOTVS Environment
Request #1
(Micro Service)
Request #2
(Micro Service)

73. 73
• Criar uma arquitetura macro de referência, pensando em Processo (DevOps),
Framework e Plataforma.
• Entender que a fase de descoberta (Lean Inception, UX e Arquitetura) é essencial
para a fase de desenvolvimento (#nogohorse).
• Entender que o objetivo do Framework é facilitar e prover técnicas e que “nem todo
problema é um prego e nem toda a solução é um martelo”.
• Descobrir que a Plataforma é tão importante quanto o Framework a ser utilizado. ****
• Descobrir que uma solução em nuvem é (muito) mais complexa por conta da
necessidade de escalabilidade (custo). Esqueça o modelo on-premise tradicional.
Good practices

74. ALLAN RODRIGO LEITE
Obrigado!
allanrodrigol@gmail.com
EDUARDO FILIPE GOMES
eduardo.filipe.gomes@gmail.com
ALISSON MEDEIROS
alisson.medeiros@gmail.com
THIAGO ALMEIDA WEBER
thiago_asw@hotmail.com
JEFERSON FRANCISCO
jeferson.gh@gmail.com
SANDRO GIACOMOZZI
sandrogiacom@gmail.com
ROGER STEUERNAGEL
roger@steuernagel.com.br
WINSTON SONNESEN
sonnesen@gmail.com