Oracle Coherence Applications on WLS 12c Grid

Lukasz Romaszewski

ISV Migration Consultant

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Agenda

• Introduction to Oracle Coherence

• What’s new in Coherence 12c?

• HotCache

• Live Events

• POF Annotations

• Managed Coherence Servers

• Coherence Applications (GARs)

• Live Demo

• Summary

• Q&A

Agenda

• Introduction to Oracle Coherence

• What’s new in Coherence 12c?

• HotCache

• Live Events

• POF Annotations

• Managed Coherence Servers

• Coherence Applications (GARs)

• Live Demo

• Summary

• Q&A

2000 - 2007 2008 - 2012 2013 +

Oracle Coherence Through 12c Market Leader and Pioneer Since 2001

Origins of Coherence Coherence 12c +

Coherence 3.5 – 3.7.1.1

Tangosol founded in 2000

Coherence 1.0 in 2001

Acquired by Oracle 2007

Deep integration with FMW & Exalogic

In-memory data grids grow in popularity

Broadening vertical adoption

Foundation for Mobile & Cloud Architectures

In-memory grids become strategic standards

Scale for the Internet of Things (IoT)

Cloud Application Foundation Out of the Box, Best of Breed, Pre-Integrated Cloud Infrastructure

Cloud Application Foundation

Virtual Assembly Builder

Oracle Traffic Director

WebLogic Server WebLogic &

Tuxedo

XA

WebLogic JMS Coherence

Java EE

Java SE

Coherence Clustered Caching Explained Partitioned, Fault Tolerant, Self-Healing Cache

• Cluster of nodes holding % of primary data locally

• Back-up of primary data is distributed across all other nodes

• Logical view of all data from any node

• All nodes verify health of each other

• In the event a node is unhealthy, other nodes

diagnose state

• Unhealthy node isolated from cluster

• Remaining nodes redistribute primary and

back-up responsibilities to healthy nodes

X

?

Example Uses Coherence In-Memory Data Grid

• Caching

– Client applications request data objects and state from the Data Grid rather than backend data sources

• Analytics

– Client applications ask the Data Grid questions from simple queries to scenario modeling

• Compute

– Applications execute compute – business logic and transactions - across the Data Grid

• Events

– Applications take action based on events from the Data Grid

Coherence Grid Applications (GAR archives) Next generation of distributed caching solution

• New deployment artifact

• New container in WLS

• Fully managable with

• WebLogic Console

• WLST

• Command line tools

• Dramatically simplifies grid

applications management

• WEB-INF •web.xml

•...

WAR

• META-INF •ejb-jar.xml

•...

JAR

• META-INF •ra.xml

•...

RAR

• META-INF •coherence-application.xml

•...

GAR

Agenda

• Introduction to Oracle Coherence

• What’s new in Coherence 12c?

• HotCache

• Live Events

• POF Annotations

• Managed Coherence Servers

• Coherence Applications (GARs)

• Live Demo

• Summary

• Q&A

Coherence GoldenGate HotCache

• Solves the “stale cache” problem

• Applications updating DB outside Coherence

• Leverages existing technologies

• Golden Gate

• TopLink Grid

• Golden Gate detects changes, drives Cache updates through JPA/TopLink Grid

• No programming

• Broaden the applicability/usability of Coherence in enterprise applications

Database Synchronization

Live Events

• Provides information about Server-Side activities and

lifecycle

• Supports interception to observe and/or change server-side behavior

• One programming model for all events

• Data Related Events

• EntryProcessor Related Events

• Transfer Related Events

• Transaction Related Events

• Configuration Lifecycle Events (e.g. Managed Coherence Servers)

• More suitable for event driven architectures

• Declarative configuration

Converged server-side programming model

• Available since Coherence 3.7

• Less XML to write and maintain

• POF definition goes along with code

• Makes the configuration a lot easier

• Coherence 12c can automatically generate

POF config files based on

• POF annotations

• existing configuration files (templates)

• Ideal for Maven / Ant / CI builds

POF Annotations

In-line configuration

Managed Coherence Servers

• Traditional Deployment & Management Approach

• Coherence applications as a jar incorporated into a JSE/JEE

application

• Two roles within a Coherence application:

• Servers – hold cache data and perform server processing

• Clients – do not hold data but perform data operations

• Servers usually started by running a Java class (DefaultCacheServer)

• Challenges with this approach • Separate lifecycle of cache servers (custom shell scripts/utilities)

• Development, deployment and management of these type of

applications more difficult

• No “standard” way to deploy/manage Coherence across different

platforms and environments

• Every customer has no option but to re-invent the wheel

<caching-scheme-mapping>

<cache-mapping>

<cache-name>dist-*</cache-name>

<scheme-name>example-distributed</scheme-name>

<init-params>

<init-param>

<param-name>back-size-limit</param-name>

<param-value>8MB</param-value>

</init-param>

</init-params>

</cache-mapping>

<cache-mapping>

<cache-name>near-*</cache-name>

<scheme-name>example-near</scheme-name>

<init-params>

<init-param>

<param-name>back-size-limit</param-name>

<param-value>8MB</param-value>

</init-param>

</init-params>

</cache-mapping>

<cache-mapping>

<cache-name>repl-*</cache-name>

<scheme-name>example-replicated</scheme-name>

</cache-mapping>

<cache-mapping>

<cache-name>opt-*</cache-name>

<coherence

xmlns:xsi="http://www.w3.org/2001/XMLSchema-

instance"

xmlns="http://xmlns.oracle.com/coherence/coherence-

operational-config"

xsi:schemaLocation="http://xmlns.oracle.com/coheren

ce/coherence-operational-config coherence-

operational-config.xsd"

xml-override="/tangosol-coherence-

override.xml">

<cluster-config>

<multicast-listener>

<time-to-live system-

property="tangosol.coherence.ttl">4</time-to-live>

<join-timeout-milliseconds>3000</join-timeout-

milliseconds>

</multicast-listener>

</cluster-config>

<logging-config>

<severity-level system-

property="tangosol.coherence.log.level">5</severity-

level>

<character-limit system-

property="tangosol.coherence.log.limit">0</character-

limit>

</logging-config>

</coherence>

EAR

• Simplified and streamlined development and management environment

• Leverages WebLogic infrastructure

• Similar to EJB, JMS and JCA

• Management through Configuration Wizard,

WebLogic admin console, WLST, JMX, FMWC

• Deployment of Coherence applications (GARs)

• Node Manager for lifecycle management

• Coherence libraries on the system classpath

(no need to package in your application)

• Coherence remains available “standalone” including support for GARs

Managed Coherence Servers

Node Manager

Machine

Java EE/Coh

Server

Coherence

Server

Node Manager

Machine

Java EE/Coh

Server

Coherence

Server

Node Manager

Machine

Admin

Server

WebLogic Domain

Cluster

Cluster

Standalone Coherence Clusters

Create a Coherence Application (GAR) - Package GAR as separate artifact

- GAR can also be packaged in WebLogic EAR or as a shared library

- Include config files coherence-application.xml, coherence-cache-

config.xml, pof-config.xml

Establish Coherence Infrastructure - Coherence cluster general attributes – cluster port, name, etc

- Tiered topology (Application layer and Storage layer) via WLS Clusters

- Leverage Configuration Wizard, Console, WLST, FMWC

Deploy GAR into Coherence Infrastructure - Console, WLST, FMWC, webLogic.Deployer, ant

- Coherence services will be automatically started

Monitor Deployment and Cluster Infrastructure

Multiple Topologies Supported - Coherence-only, Coherence/Java EE, Storage-enabled/storage-

disabled, Coherence*Extend, Coherence*Web, etc.

Managed Coherence Servers - Use Case

Node Manager

Machine

Managed

Server

Node Manager

Machine

Managed

Server

Node Manager

Machine

Admin

Server

WebLogic Domain/ Managed Coherence

Servers

Cluster

Coherence

App

Coherence

App

Coherence Applications What is a Grid Archive (GAR)?

• A GAR file contains Coherence and dependent artifacts required for the operation of a Coherence application

• The structure of a GAR is as follows:

META-INF/MAINFEST.MF /coherence-application.xml /coherence-cache-config.xml /pof-config.xml

com/oracle/demo/Class1.class /Class2.class ....

lib/myjar.jar /myjar2.jar

GAR Deployment descriptor file

Cache configuration file

POF configuration file (optional)

Classes required by the Coherence

application such as entry processors,

POJO’s, aggregators, business logic.

Any supporting libraries (optional)

Pointer to POF

configuration file

• The GAR deployment descriptor, coherence-

application.xml contains the following:

<?xml version="1.0" encoding="ISO-8859-1"?>

<coherence-application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns="http://xmlns.oracle.com/weblogic/coherence-application">

<cache-configuration-ref

override-property="cache-config/ExamplesGar">META-INF/example-cache-config.xml

</cache-configuration-ref>

<pof-configuration-ref>META-INF/pof-config.xml</pof-configuration-ref>

<application-lifecycle-listener>

<class-name>com.tangosol.examples.container.gar.LifecycleReactor</class-name>

</application-lifecycle-listener>

<configurable-cache-factory-config />

</coherence-application>

Pointer to cache

configuration file, with

optional override

property

Optional

implementation of

LifeCycleListener

for prę/post start

processing

Optional

implementation of

ConfigurableCache

Factory

Coherence Applications What is a Grid Archive (GAR)?

GAR Deployment Modes

• GAR modules can be deployed to a Managed Server in

number of ways to support Coherence based applications

MyApp.gar

Stand Alone – caches

are automatically isolated

Application.ear

MyApp.gar

MyApp2.gar WebApp.war

MyApp.gar

Embedded GAR - available

to war/jar files in EAR Deployed as shared library –

available to all WAR/EAR

WebEJB.jar

Application.ear

WebApp.war

WebEJB.jar

Example Deployment Architecture

• Best practice is to have a

storage-disabled client tier

• We can utilize the WebLogic

clustering capabilities to set this

in Coherence

• Example deployment example: • DataTier cluster is storage-enabled

• WebTier cluster is storage-disabled

• MyApp.gar deployed to DataTier

cluster

• MyWebApp.ear deployed to

WebCluster

Domain

WebLogic Cluster: DataTier (storage-enabled)

WebLogic Cluster: WebTier (storage-disabled)

MS1 MS2 MS3

MyApp.gar MyApp.gar MyApp.gar

MS4

MyApp.ear

MyApp.gar

WebAp.war

MS5

MyApp.ear

MyApp.gar

WebAp.war

MS6

MyApp.ear

MyApp.gar

WebAp.war

WebLogic Cluster

Coherence Cluster

Coherence Project Configuration

• GAR Support in 12.1.2

• Standalone Coherence Project

• Facets

• Library Management

Coherence Runtime Support

• Launch Configurations

• Run/Deploy/Debug from IDE

• Run as Managed Coherence Server

Cache Configuration Editor

• Rich Coherence descriptor editors

• Validation and Integrated F1 Help

Oracle Enterprise Pack for Eclipse (OEPE)

Agenda

• Introduction to Oracle Coherence

• What’s new in Coherence 12c?

• HotCache

• Live Events

• POF Annotations

• Managed Coherence Servers

• Coherence Applications (GARs)

• Live Demo

• Summary

• Q&A

DEMONSTRATION

Oracle Coherence 12c

Q&A

Lukasz Romaszewski

Oracle ISV Migration Center FMW Consultant

lukasz.romaszewski@oracle.com

ISV Migration Center blog: http://blogs.oracle.com/imc