Just enough app server
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Antonio Goncalves discusses the need for streamlined Java EE application servers that avoid the pitfalls of traditional monolithic architectures. He emphasizes the advantages of customizing app server packaging to fit different application requirements, highlighting solutions like WildFly Swarm and microservices approaches. The presentation also touches on Docker usage and the evolution of Java EE to meet modern development needs.
![49@agoncal
Dockerfile
FROM java:openjdk-8-jdk
EXPOSE 8081
ADD target/topcds-swarm.jar /opt/topcds-swarm.jar
ENTRYPOINT ["java", "-jar", "/opt/topcds-swarm.jar"]](https://image.slidesharecdn.com/2016-07-justenoughappserver-160713154528/85/Just-enough-app-server-49-320.jpg)
Just enough app server
- 1. Just Enough App Server by antonio goncalves @agoncal
- 3. Take what you need from Java EE and resize your App Server
- 4. 4@agoncal How do we see Java EE App Servers ? One Monolith ! Slow Fat Heavyweight Old Not sexy Boring
- 9. 9@agoncal Three types of Java EE App Servers Three Monoliths !
- 12. 12@agoncal Web Profile JSP Expression Language Servlets JSTL Interceptors JAX-RS JSON-P CDI JPAWebSocket JTA Bean Validation
- 13. 13@agoncal Java EE JSP Expression Language Servlets JSTL Interceptors JAX-RS JSON-P CDI JPAWebSocket JTA Bean Validation JMSJSFJAX-WS EJB JavaMail JCA Concurrency Batch JASPIC
- 14. 14@agoncal JVM JSP Expression Language Servlets JSTL Interceptors JAX-RS JSON-P CDI JPAWebSocket JTA Bean Validation JMSJSFJAX-WS EJB JavaMail JCA Concurrency Batch JASPIC JVM
- 15. 15@agoncal JVM JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations
- 16. 16@agoncal Your own app JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations My code
- 17. 17@agoncal Your own app dependencies JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations My code SLF4J Angular ReactPrimefaces Bootstrap JQuery
- 18. App servers are slow !
- 19. 19@agoncal Startup time of App Servers
- 20. 20@agoncal Startup time of JBoss Using a Windows XP virtual machine (Virtual Box) 3.2.8 4.2.3 5.1 6.1 7 Beta 0 5 10 15 20 25 30 35 40 Startup time Specs
- 22. 22@agoncal Memory consumption of App Servers
- 23. App servers use outdated packaging !
- 24. 24@agoncal Your own app… needs packaging JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations My code SLF4J Angular ReactPrimefaces Bootstrap JQuery
- 25. 25@agoncal Skinny War JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations My code SLF4J Angular ReactPrimefaces Bootstrap JQuery
- 26. 26@agoncal My code Fat War JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations SLF4J Apache Commons Drools SLF4J Angular React
- 28. 3 apps 3 different needs !
- 29. 29@agoncal CD-Book Store JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations My code Primefaces Bootstrap JQuery
- 30. 30@agoncal Top Books JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations My code
- 31. 31@agoncal Top CDs JTA JMS JSP Interceptors JAX-RS Expression Language JSF Servlets JSON-P CDI JAX-WS JPA Bean Validation EJB JavaMail WebSocket JSTL JCA Concurrency Batch JASPIC JDBC JNDI Logging JAX-B JMX Commons Annotations My code
- 32. What a Waste ! Let's package what we need… ...in a “uber” Jar
- 33. 33@agoncal My code CD-Book Store JTAInterceptors JAX-RS Expression Language JSF Servlets JSON-PCDI JPA Bean Validation EJB JDBC JNDI Logging JAX-B Commons Annotations Primefaces Bootstrap JQuery
- 34. 34@agoncal My code Top Books JTAInterceptors Expression Language Servlets JSON-PCDI JPA Bean Validation JDBC JNDI Logging JAX-B Commons Annotations JAX-RS
- 36. 36@agoncal Several solutions to choose from ● Full Java EE ● WildFly Swarm ● Payara Micro ● TomEE ● KumuluzEE ● “Sort of” Java EE ● Spring Boot ● Other ● Dropwizard ● Lagom
- 38. And what about multiple apps ?
- 39. 39@agoncal My code Top CDsssssssss Servlets Commons Annotations Logging My code Servlets Commons Annotations Logging My code Servlets Commons Annotations Logging My code Servlets Commons Annotations Logging My code Servlets Commons Annotations Logging My code Servlets Commons Annotations Logging
- 40. 40@agoncal My code Top CDsssssssss Commons Annotations Logging My code Commons Annotations Logging My code Commons Annotations Logging My code Commons Annotations Logging My code Commons Annotations Logging My code Commons Annotations Logging Servlets Local Maven Repo If only we had Jigsaw !
- 42. Some metrics
- 45. And how do I manage it now ?
- 46. 46@agoncal Configure your app public class MyMain { public static void main(String...args) { new Container() .fraction(new DatasourcesFraction() .jdbcDriver("h2", (d) -> { d.driverClassName("org.h2.Driver"); d.driverModuleName("com.h2database.h2"); }) .dataSource("ExampleDS", (ds) -> { ds.driverName("h2"); ds.connectionUrl("jdbc:h2:mem:test"); ds.userName("foo"); ds.password("bar"); })) .start() .deploy();
- 48. And what about Docker ?
- 49. 49@agoncal Dockerfile FROM java:openjdk-8-jdk EXPOSE 8081 ADD target/topcds-swarm.jar /opt/topcds-swarm.jar ENTRYPOINT ["java", "-jar", "/opt/topcds-swarm.jar"]
- 52. Final word
- 53. 53@agoncal Wildfly Swarm ● Based on good old JBoss AS ● Bundles several fractions ● Java EE ● Netflix OSS (Ribbon, Hystrix, RxJava) ● Spring ● Logstash ● Swagger ● ...
- 54. 54@agoncal Java EE App Servers ● Java EE app server have changed ● Are not monolithic, slow, consume resources ● Package the way you want (skinny/fat war, uber jar) ● Re-use your Java EE expertise ● Look Ma, « Microservices inside » ● « I’m centralised and I’m proud! »
- 55. That's it !
- 59. Q & A
- 60. 60antonio goncalves Creative Commons ● Attribution — You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). ● Noncommercial — You may not use this work for commercial purposes. ● Share Alike — If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.