Introduction to NOSQL

Otávio Santana@otaviojavahttps://github.com/otaviojava/http://about.me/otaviojava

Agenda

CassandraArchitectureHierarchyModelingExample (Spring and Weld CDI)

NOSQL

Not only SQLKnow your problem first

SQL vs NOSQL•Driver•SQL ANSI• Transactions• High cost of IO• Easy change data base• Relationship

• API• No standarization• No transactions• Find by key• Woring change data base• No relationship

Classification

Architecture StorageOrganization

Key-ValueDocumentGraphColumn Family

CassandraDistributedConfigurableColumns Family

CassandraGossipConsistency Levelwrite and read

ANYONELOCAL_QUORUMEACH_QOURUMALL

Availability

Consistency

Modeling

AnnotationJPA 2.0

Spring

Configuration xml or java Code

Spring Data- Cassandra

Cassandra

Spring Data- Cassandra

Cassandra

PersistenceSimpleImpl@Produces@Inject…

JSR 299

Thank you

Otávio Santana@otaviojavahttps://github.com/otaviojava/http://about.me/otaviojava

#SouJava

Thomas Modeneis@thomasmodeneis

Table of contents

• OSGI– Benefits• Developers

• BusinessReduce, Reuse, Easy Deployment, Dynamic, Adaptive, Fast, Secure.

– Architecture• Layering, Modules, Services, Implementations.

– Conclusion– Demo– Questions ?

Benefits For the Developers

– OSGi reduces complexity.

– Provides a modular architecture

– Reduces development and maintenance expenses

– Realizes the promise of Component-based systems

Benefits For the Business

• Reduces operational costs.

• Integrates multiple devices in a networked environment.

• Enables:

–Tackling costly application development

–

–Maintenance

–

–Remote service management

Reduce, Reuse, Easy Deployment, Dynamic, Adaptive, Fast, Widely Used.

– Reduce• Bundles hide their internals Reducing defects and Simplifying the

development

– Reuse• Makes it very easy to use third party components

• An increasing number of projects providing JARs for OSGi

– Easy Deployment• OSGi installation and Management can be as simple as

– Command shell or –  A CLOUD interface like Amazon's EC2

Reduce, Reuse, Easy Deployment, Dynamic, Adaptive, Fast, Widely Used.

Dynamic• Dynamic Model, Developers do not believe this can

be done.

• However, after some time, they realize it actually works

Adaptive• Registry is a dynamic, Service model allows bundles

to find out what capabilities are available

Small The OSGi R.4 Framework can be implemented in

about a 300KB

Fast• Linear list, pre-wires bundles, Each bundle knows

exactly which bundle provides the class

• Significant speed up factor at start up

Reduce, Reuse, Easy Deployment, Dynamic, Adaptive, Fast, Widely Used.

Extensively used in many industries

Automotive, Mobile Telephon,

Industrial Automation ,

Eclipse Environment,

Spring Framework,

Foundation of IBM Websphere,

Oracle (formerly BEA) Weblogic,

Sun's GlassFish,

Redhat's JBoss

Architecture

ConclusionThough components have been on the horizon for long time.

– But so far, they failed to make good on their promises

– OSGi is the first technology that succeed with a component system that really is solving real problems in software development.

• The key reason OSGi technology is successful ?

– It provides very mature component system that actually works

– Code is easier to write, test and reuse is increased.

– Defects are detected earlier

– Is testified by the wide adoption and use in popular apps like Eclipse and Spring.

Demo

• Apache CXF – (SOAP, XML/HTTP, RESTful HTTP, or

CORBA)

• Apache Karaf –Lightweight OSGI container

• Speaker Service Hello World Karaf & CXF

Questions … ?

References

• The Javadoc of the OSGi API

• The specification PDF

• OSGi in different industries and markets

• How to Get Started with OSGi

• Other Links

Links

@soujava

https://www.facebook.com/soujava

http://goo.gl/unH3z

Thank you#soujava

Thomas R Modeneis@thomasmodeneis