Stefano Maestri - JBug Milano April 2012

2. Who is Stefano?
● JBoss WS[1] committer since early 2007
● Committer of various Jboss projects
● JBoss / Red Hat employee since July 2010
● JBoss AS7[2] team memeber
● IronJacamar[4] team member
● Wise[3] project leader
● Follow me: www.javalinux.it, www.twitter.com/maeste
https://plus.google.com/102371438013760231375/about
https://github.com/maeste http://www.linkedin.com/in/maeste
[1] http://www.jboss.org/jbossws [2] http://www.jboss.org/jbossas
[3] http://www.jboss.org/wise [4] http://www.jboss.org/ironjcamar

3. AS7 in a nutshell
Fast
●
Very fast
●
Blazingly fast (<3s startup)
●
#@*%ing fast
●

4. AS7 in a nutshell (seriosly)
●Blazingly fast (<3s startup)
●Lightweight
●Modular core
●Hot, parallel deployment
●Elegant administration
●Domain management
●Easy testable

5. Boot time

6. Memory

7. Core rewritten from scratch to achive..
● Improved usability, increased
manageability, simplified configuration
● Domain management
● Multiple consistent management
interfaces
● CLI, Java API, HTTP API, Console
● Unified user-focused configuration
● Modular
● Only API – no implementation details
● True isolation

8. Simplified user-focused configuration

9. Standalone mode
● Standalone is a single AS process for use in
development, where the additional
management functionality is not required
● Provides a similar development experience
to previous versions of the JBoss AS,
allowing a deployment to be dropped in a
folder and automatically be deployed
● Same management tools and APIs as
domain mode

10. Domain mode
● Easy management of multiple JBoss AS
instances
● Managed from a single point, all have
access to the same domain configuration
● Allows for management and configuration
updates to be pushed out to all servers
● Domain mode has three separate processes
● Process Controller
● Host Controller
● Server instance

11. Domain processes
● Process Controller
● Responsible for managing, starting / stopping
processes
● Extremely simple
● Host Controller
● One host controller is the domain controller,
the rest are slaves
● Domain controller responsible for pushing
management and configuration changes

12. Domain mode

13. Demos
● Booting standalone mode
● Booting domain mode

14. Architecture

15. JBoss Modules
● New classloading project
● Provides a modular (not hierarchical)
classloading environment
● Classloading is extremely fast
● Classloading is truely isolated by default
● Classloading is extremely flexible

16. Hierarchical classloading

17. Modular classloading

18. JBoss Modules
● Fast
● O(1) dependency resolution
● Concurrent (lock-free in most Vms)
● Pure modular classloading
● Can only resolve what they import
● External configuration (module.xml)
● Dynamic (can be redefined)
● Extensible (JBoss OSGi)

19. module.xml

20. JBoss Modular Service Container (MSC)
● Small, lightweight and efficient
● Highly concurrent scalable state machine

21. Dynamic Model Representation (DMR)
● Central detyped management API
● All management operations with/on DMR
● Backwards compatible
● Can be used to control standalone or
domain
● Detypes (i.e. string based) API uses small
set of Java classes
● Various transports (Java remoting,
JSON/HTTP)

22. Dynamic Model Representation (DMR)

23. Managing with cli
● Text base user interface
● Easy to use both for standalone and
domain mode
● Scriptable.
● Demo....

24. Managing with webconsole
● Web console in AS7 is a best effort
● It is now developed for most common
administration tasks
● It will increase its functions in next
months
● It's adding a lot of metrics
● JBossON for EAP

25. Community
● Get involved !
● Base for JBoss Enterprise Application
Platform 6
● Download
● http://www.jboss.org/jbossas/downloads
● Forum
● http://community.jboss.org/en/jbossas/as7_us
ers

26. Community
● Hacking on AS 7
● http://community.jboss.org/wiki/HackingonAS
7
● Webinars
● http://www.jboss.org/as7/webinars.html
● Documentation
● https://docs.jboss.org/author/display/AS7/Doc
umentation