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Anton Arhipov

Technologie Bildung

Turnaround
cycle
Make
a

change

Check
Build,
the
deploy,
result wait

Saturday, April 21, 12

Build
Resolve
dependencies

Copy
staGc
resources

Compile
classes

Package
modules
into
JARs

Package
everything
into
WAR/EAR
Saturday, April 21, 12

Exploded
Directory
Deployment

Saturday, April 21, 12

JeAy
Launcher
public class Launcher {

public static void main(String[] args) {

Server server = new Server();

SelectChannelConnector connector
= new SelectChannelConnector();
connector.setPort(8080);
server.addConnector(connector);

WebAppContext context = new WebAppContext("war", "/");
server.setHandler(context);
server.start();

}

}
Saturday, April 21, 12

Deployment

1–60s 30s
–
15min ~1min

applicaBon
deployment

container
boot
Bme
navigaBon

Saturday, April 21, 12

Deployment

1–60s 30s
–
15min ~1min
OOM

applicaBon
deployment

container
boot
Bme
navigaBon

Saturday, April 21, 12

OutOfMemoryError
DEMO

Saturday, April 21, 12

Externalized, Temporary,

State%

Serializable, Deriva6ve,

Saturday, April 21, 12

Reloading
Classes

OldClassLoader

MyObject.class

MyObject

Saturday, April 21, 12

Reloading
Classes

OldClassLoader NewClassLoader

MyObject.class

MyObject

Saturday, April 21, 12

Reloading
Classes

OldClassLoader NewClassLoader

MyObject.class MyObject.class

Recreate
object
MyObject MyObject

Saturday, April 21, 12

Web
ApplicaBon
Redeployment

Process

Session
Classes Servlet

State
Libraries

OldClassLoader
Saturday, April 21, 12

Web
ApplicaBon
Redeployment

Process

Session
Classes Servlet

State
Libraries

OldClassLoader NewClassLoader
Saturday, April 21, 12

Web
ApplicaBon
Redeployment

Process

Session
Classes Servlet Classes

State
Libraries Libraries

OldClassLoader NewClassLoader
Saturday, April 21, 12

Web
ApplicaBon
Redeployment

Process

Session
Classes Servlet Classes Servlet

State
Libraries Libraries

OldClassLoader NewClassLoader
Saturday, April 21, 12

Web
ApplicaBon
Redeployment

Process
init()

Session
Classes Servlet Classes Servlet

State State
Libraries Libraries

OldClassLoader NewClassLoader
Saturday, April 21, 12

Web
ApplicaBon
Redeployment

Process
Serialize/deserialize

Session Session
Classes Servlet Classes Servlet

State State
Libraries Libraries

OldClassLoader NewClassLoader
Saturday, April 21, 12

Web
ApplicaBon
Redeployment

Process

Session Session
Classes Servlet Classes Servlet

State State
Libraries Libraries

OldClassLoader NewClassLoader
Saturday, April 21, 12

Web
ApplicaBon
Redeployment

Process

Session
Classes Servlet

State
Libraries

NewClassLoader
Saturday, April 21, 12

OutOfMemoryError
Simulation

Saturday, April 21, 12

hAp://zeroturnaround.com/java-‐ee-‐producBvity-‐report-‐2011/
Saturday, April 21, 12

HotSwap
Make
changes
in
IDE
ClassLoader

MyObject.class
Code
101000101 HotSwap
100010010 New
code
111000100
101010010

MyObject

Saturday, April 21, 12

JRebel
Make
changes
in
IDE
ClassLoader

MyObject.class
Code
101000101
New
code
JRebel
100010010
111000100
101010010

MyObject

Saturday, April 21, 12

Hotswap
vs
JRebel
JRebel&vs&HotSwap&
Hotswap
HotSwap( JRebel
JRebel(
Changing&method&bodies& +( +(
Adding/removing&methods& ;& +&
Adding/removing&constructors& ;& +&
Adding/removing&ﬁelds& ;& +&
Adding/removing&classes& ;& +&
Adding/removing&annota?ons& ;& +&
Replacing&superclass& ;& ;&
Adding/removing&implemented& ;& ;&
interfaces&
Saturday, April 21, 12

JRebel
Make
changes
in
IDE
ClassLoader
Framework

MyObject.class
Code
101000101
New
code
JRebel
100010010
111000100
101010010

MyObject

Saturday, April 21, 12

JRebel
Make
changes
in
IDE
ClassLoader
Framework

MyObject.class
Code
101000101
New
code
JRebel
100010010
111000100
101010010

MyObject
ConﬁguraGon
(XML,
annotaGons,..)

Saturday, April 21, 12

getResource(“hello.html”) read(“src/main/.../hello.html”)

virtual
mapping

MyApp.war

Saturday, April 21, 12

JRebel
IntegraBon

hAp://zeroturnaround.com/jrebel/features/frameworks/
Saturday, April 21, 12

What
About
Live

Environments?

Saturday, April 21, 12

• LiveRebel
updates
are
– Online
– Automated
– TransacBonal
– 100%
Reversible
– Instant

Saturday, April 21, 12

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NoRedeploys: instant updates for dev and prod

1. NoRedeploys Instant updates for dev and prod Anton Arhipov Product Lead, JRebel @antonarhipov @javarebel Saturday, April 21, 12

2. !!!WARNING!!! Saturday, April 21, 12

3. Turnaround cycle Make a change Check Build, the deploy, result wait Saturday, April 21, 12

4. Build Resolve dependencies Copy staGc resources Compile classes Package modules into JARs Package everything into WAR/EAR Saturday, April 21, 12

5. Build Resolve dependencies Copy staGc resources Compile classes Package modules into JARs Package everything into WAR/EAR Saturday, April 21, 12

6. Exploded Directory Deployment Saturday, April 21, 12

7. Exploded Directory Deployment Saturday, April 21, 12

8. JeAy Launcher public class Launcher { public static void main(String[] args) { Server server = new Server(); SelectChannelConnector connector = new SelectChannelConnector(); connector.setPort(8080); server.addConnector(connector); WebAppContext context = new WebAppContext("war", "/"); server.setHandler(context); server.start(); } } Saturday, April 21, 12

9. Deployment 1–60s 30s – 15min ~1min applicaBon deployment container boot Bme navigaBon Saturday, April 21, 12

10. Deployment 1–60s 30s – 15min ~1min OOM applicaBon deployment container boot Bme navigaBon Saturday, April 21, 12

11. OutOfMemoryError DEMO Saturday, April 21, 12

12. Externalized, Temporary, State% Serializable, Deriva6ve, Saturday, April 21, 12

13. Reloading Classes OldClassLoader MyObject.class MyObject Saturday, April 21, 12

14. Reloading Classes OldClassLoader NewClassLoader MyObject.class MyObject Saturday, April 21, 12

15. Reloading Classes OldClassLoader NewClassLoader MyObject.class MyObject.class Recreate object MyObject MyObject Saturday, April 21, 12

16. Web ApplicaBon Redeployment Process Session Classes Servlet State Libraries OldClassLoader Saturday, April 21, 12

17. Web ApplicaBon Redeployment Process Session Classes Servlet State Libraries OldClassLoader NewClassLoader Saturday, April 21, 12

18. Web ApplicaBon Redeployment Process Session Classes Servlet Classes State Libraries Libraries OldClassLoader NewClassLoader Saturday, April 21, 12

19. Web ApplicaBon Redeployment Process Session Classes Servlet Classes Servlet State Libraries Libraries OldClassLoader NewClassLoader Saturday, April 21, 12

20. Web ApplicaBon Redeployment Process init() Session Classes Servlet Classes Servlet State State Libraries Libraries OldClassLoader NewClassLoader Saturday, April 21, 12

21. Web ApplicaBon Redeployment Process Serialize/deserialize Session Session Classes Servlet Classes Servlet State State Libraries Libraries OldClassLoader NewClassLoader Saturday, April 21, 12

22. Web ApplicaBon Redeployment Process Session Session Classes Servlet Classes Servlet State State Libraries Libraries OldClassLoader NewClassLoader Saturday, April 21, 12

23. Web ApplicaBon Redeployment Process Session Classes Servlet State Libraries NewClassLoader Saturday, April 21, 12

24. Web ApplicaBon Redeployment Process Session Session Classes Servlet Classes Servlet State State Libraries Libraries OldClassLoader NewClassLoader Saturday, April 21, 12

25. OutOfMemoryError Simulation Saturday, April 21, 12

26. hAp://zeroturnaround.com/java-‐ee-‐producBvity-‐report-‐2011/ Saturday, April 21, 12

27. HotSwap Make changes in IDE ClassLoader MyObject.class Code 101000101 HotSwap 100010010 New code 111000100 101010010 MyObject Saturday, April 21, 12

28. JRebel Make changes in IDE ClassLoader MyObject.class Code 101000101 New code JRebel 100010010 111000100 101010010 MyObject Saturday, April 21, 12

29. Hotswap vs JRebel JRebel&vs&HotSwap& Hotswap HotSwap( JRebel JRebel( Changing&method&bodies& +( +( Adding/removing&methods& ;& +& Adding/removing&constructors& ;& +& Adding/removing&ﬁelds& ;& +& Adding/removing&classes& ;& +& Adding/removing&annota?ons& ;& +& Replacing&superclass& ;& ;& Adding/removing&implemented& ;& ;& interfaces& Saturday, April 21, 12

30. JRebel Make changes in IDE ClassLoader MyObject.class Code 101000101 New code JRebel 100010010 111000100 101010010 MyObject Saturday, April 21, 12

31. JRebel Make changes in IDE ClassLoader Framework MyObject.class Code 101000101 New code JRebel 100010010 111000100 101010010 MyObject Saturday, April 21, 12

32. JRebel Make changes in IDE ClassLoader Framework MyObject.class Code 101000101 New code JRebel 100010010 111000100 101010010 MyObject ConﬁguraGon (XML, annotaGons,..) Saturday, April 21, 12

33. getResource(“hello.html”) read(“src/main/.../hello.html”) virtual mapping MyApp.war Saturday, April 21, 12

34. in acBon Saturday, April 21, 12

35. JRebel IntegraBon hAp://zeroturnaround.com/jrebel/features/frameworks/ Saturday, April 21, 12

36. What About Live Environments? Saturday, April 21, 12

37. Saturday, April 21, 12

38. Saturday, April 21, 12

39. • LiveRebel updates are – Online – Automated – TransacBonal – 100% Reversible – Instant Saturday, April 21, 12

40. ? 32 Saturday, April 21, 12

NoRedeploys: instant updates for dev and prod

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NoRedeploys: instant updates for dev and prod