Achieving genuine elastic multitenancy with the Waratek Cloud VM for Java : John Matthew Holt

!
!
!

Achieving genuine elastic multitenancy
!
for Java applications with the Waratek
Cloud VM for Java!
© Copyright 2012

The Problem with Java!
•  Java is 15 years old, predates multitenant cloud computing

•  JavaEE app servers were designed to host multiple webapps,
but rarely do in practice because there's no isolation between
webapps

•  Today's JavaSE/JavaEE apps are deployed as "one app per
app-server per JVM", which leads to "app-server sprawl”

•  Hosting one webapp per JVM means provisioning ﬁxed cpu/
memory quotas which can't elastically ﬂuctuate on demand.

© Copyright 2012

The Problem with Java!
•  Hosting one webapp per ﬁxed cpu/memory quota means
there is unused cpu/memory capacity being paid for: this is a
waste

•  Today's JavaSE/JavaEE apps are perfectly suited to a
multitenant "pay exactly what you consume" model were there
a multitenant JVM

•  A multitenant JVM would be able to charge computing power
like a utility: gigahertz-hours for cpu, gigabyte-hours for
memory

© Copyright 2012

Virtualizing the Java Platform!

•  The Waratek Cloud VM introduces a feature called Java
Virtualization Containers (JVC)
•  A JVC is a metacircular VM within the JVM which shares the
host JVM environment (heap, classes, JIT) with other JVCs
•  A JVC is extremely lightweight: < 1 MB overhead per JVC

JVC 1! JVC 2! JVC 3!

Waratek Cloud VM for Java!

© Copyright 2012

Fine-grained resource control!
•  A single VM can host thousands of JVCs:
a JVC can be any size (from 1MB up to many GBs)

•  Every aspect of JVC execution is isolated:
cpu priority, memory limits, bandwidth, etc

•  Every aspect of JVC use is metered:
cpu use in Hz, memory/IO use in Bytes

•  JVCs provide computing power like electricity kW-h:
cpu consumed in GHz-h, memory consumed in GB-h
© Copyright 2012

Waratek Cloud VM delivers Java-as-a-Service!

•  Run JavaSE/JavaEE platform software as a multitenant cloud
service without code change:
binary compatible with existing apps and platforms

•  Every .war/.ear/.jar app gets its own JVC

.war app! .ear app! .jar app!

Tomcat / JBoss / GlassFish / Other !

Waratek Cloud VM for Java!

© Copyright 2012

Extensible Java Virtualization!

•  JVC framework is fully extensible and customizable:
enhanced JVCs can be created by anyone using Waratek
APIs

•  Special-purpose JVCs already in dev or planning:
Servlet JVCs for Tomcat, EAR JVCs for JBoss, Scala JVC,
Clojure JVC, et al

•  Waratek is adding a range of premium JVC features:
legacy JVCs, live snapshot, live migration, JVC mirroring
for disaster-recovery, etc.
© Copyright 2012

Waratek Cloud VM for Java Summary!

ü  Genuine, extensible, Java multitenancy

ü  Precise metering of compute usage, by application

ü  Allocation and prioritization of resources in real time, by
application

ü  Instant scalability

ü  Granular elasticity

ü  Binary compatibility
© Copyright 2012

Use
Case

Copyright Push Technology 2012

•  Bri7sh
startup.
Founded
in
2006.

•  ‘Last
mile’
data
distribu7on
specialist.

•  Unique
data-‐centric
approach
to

messaging/caching.

•  Preferred
by
6
of
the
top
10
online

eGaming
exchanges.

•  Growing
fast.
400%
year
on
year.

•  Focus:
Be'er
bang
for
your
bytes!

Introducing
Push
Technology


•  Distributed
Systems
/
HPC
guy.

•  Chief Scientist :- at Push Technology

•  Alumnus
of
:-‐

Motorola,
IONA,
BeXair,
JPMC,
StreamBase.

•  School:
Trinity
College
Dublin.

-‐
BA
(Mod).
Comp.
Sci.+

-‐
M.Sc.
Networks
&
Distributed
Systems

•  Responds
to:
Guinness,
Whisky

About
me?

Copyright
Push
Technology
2012

Darach@PushTechnology.com

Tradi7onal
Messaging

Pros Cons
•  Extend
the
Enterprise
Messaging
•  Data Model has to be hand-crafted
paradigm
over
the
Internet

•  Messaging cannot do anything
•  Familiar
intelligent with messages.
•  No Data ‘intelligence’


Diffusion™:
Live
Data
Projec7on

Pros
• 
Rapid
Applica7on
Development

• 
Automa7c
Snapshot
Delta

• 
Automa7c
data-‐centric
Intelligent

confla7on

•  Efficient
recovery
of
communica7ons
context


Diﬀusion™
+
Waratek

Tenant #1 Tenant #2 Tenant #N
(Diffusion) (Diffusion) (Diffusion)

Push Technology Diffusion

Waratek Cloud VM for Java

Benefits
•  High
density
deployments

•  Elas5c.
scalable
on
demand

•  Meterability:
Bandwidth
and
compute
u7liza7on

•  Mul5-‐tenant.
Each
tenant
fully
isolated


Diﬀusion™
+
Waratek

Operations:>

Tenants :>

Gaming Live Internet Apps Finance QA + Dev + UAT

… one box to host them all!


Diﬀusion™
+
Waratek
in
the

Cloud?

Tenant #1(Diffusion) Tenant #2(Diffusion) Tenant #N (Diffusion)
Push (Diffusion) Diffusion
Technology
(Diffusion) (Diffusion) Push Technology Diffusion
Tenant #1 Tenant #2 Tenant #N Push Technology Diffusion
Tenant #1 Tenant #2 Tenant #N Push Technology Diffusion
Tenant #1(Diffusion) Tenant #2(Diffusion) Tenant #N (Diffusion) Push Technology Diffusion
Tenant #1(Diffusion) Tenant #2(Diffusion) Tenant #N (Diffusion) Push Technology Diffusion Waratek Cloud VM for Java
Tenant #1(Diffusion) Tenant #2(Diffusion) Tenant #N (Diffusion) Waratek Cloud VM for Java
Tenant #1(Diffusion) Tenant #2(Diffusion) Tenant #N (Diffusion) Waratek Cloud VM for Java
(Diffusion) (Diffusion) (Diffusion) Waratek Cloud VM for Java
(Diffusion) (Diffusion) Push (Diffusion) Diffusion
Technology Waratek Cloud VM for Java
Push Technology Diffusion Waratek Cloud VM for Java

Push (Diffusion) Diffusion
Technology
(Diffusion) (Diffusion) Push Technology Diffusion

… any box, any cloud, anywhere!


Achieving genuine elastic multitenancy with the Waratek Cloud VM for Java : John Matthew Holt

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Achieving genuine elastic multitenancy with the Waratek Cloud VM for Java : John Matthew Holt