"oracle coherence 12c technical preview" waldemar thiel, senior sales consultant, oracle...


Oracle Coherence 12c Technical Preview

Waldemar Thiel | Senior Sales Consultant


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Coherence Basics

5 Copyright © 2011, Oracle and/or its affiliates. All rights

reserved.

Coherence In Memory Data Grid Scaling, Performance and Reliability of Application Infrastructure

• Application Scalability

– Reducing backend load with in memory caching – database, applications, mainframe

• Application Performance

– In memory data access – information close in memory, not in slow backend systems

• Application Reliability

– Reliable in memory data grid providing high-availability to applications

Coherence

Applications and

Middleware

Applications and

Middleware

Scale, Increase Performance &

Improve Reliability with

Peer to Peer, High Availability

In Memory Data Grid

6 Copyright © 2011, Oracle and/or its affiliates. All rights

reserved.

Oracle Coherence In-Memory Data Grid Secret Sauce for Scaling, Performance and Reliability at Internet Scale

2001 ….. 2008 2009 2000 2007 2010

Coherence

1.0

2011

Tangosol

founded to

pioneer

distributed

caching

Cool Vendor

Award

Oracle

acquires

Tangosol

Coherence

3.7.1.1

Coherence

3.6

Coherence

3.5

Coherence

3.7

Increasing market share and feature capabilities for In Memory Data Grid.

Market widened All Categories – Financial Services, E-Commerce, Travel,

Insurance, Retail, Manufacturing, Telco …

Deep adoption in Fusion Middleware, Oracle Horizontal

and Vertical and Business Applications and Exalogic

Coherence Data Grid Uses

Caching

Applications request data from the Data Grid rather than backend data sources

Analytics

Applications ask the Data Grid questions from simple queries to advanced

scenario modeling

Transactions

Data Grid acts as a transactional System of Record, hosting data and business

logic

Events

Automated processing based on event

8 Copyright © 2011, Oracle and/or its affiliates. All rights reserved.

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

?

Coherence 12c (12.1.2) What’s new


Coherence 12.1.2

New major release of Coherence 12c

Key Themes

- Database Synchronization

- Configuration and Usability Improvements

- Oracle Fusion Middleware Convergence

- Simplification of development, deployment, and

management of Coherence applications

- Exalogic Innovation

2013 Coherence 12c (12.1.2)

• Golden Gate Adapter for Coherence

• REST security and usability improvements

• Unified Event Model

• Configuration Modernization

• Asynchronous Backups

• Backup Management Improvements

• Maven Support

• Exalogic performance optimizations

• Managed Coherence Servers

• Dynamic Thread Pooling for Proxy Servers

• OUI/Opatch Integration

• ECID Support

• OSGi Support


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 – 12.1.2 Release

Golden Gate Adaptor for Coherence


REST Security & Usability Improvements

Security

Secure communication between

REST clients and proxies using SSL

– Supports HTTP basic

authentication, client-side

certificates, or both.

– Fine-grained authorization of

REST requests.

Usability

Support for pluggable query engines

Fine grained control over queries

allowed to be executed via REST

– Introduced “named queries”

defined in the resource definition

– Allow for limitation of query

results.

Keysets retrieval


Unified Event Model Simplified server-side programming and configuration

One programming model for all events

– Triggers

– Backing Map Listeners

– Partition Listeners

– Cache Stores

Formalizes programming semantics for event

driven architectures

Exposes advanced features to a wider audience

Declarative configuration

Cache

Interceptor

Data

Interceptor

Cache Server


Configuration Modernization Facilitate programmatic configuration and extension

Goals

Permit customer driven configuration

extension

Strengthen configuration validation

Simplify integration with other products

(e.g. Spring, Guice, etc.)

eg: out-of-the-box Spring support

Fully backwards compatible

(i.e. full support for existing configurations)

Enable dynamic runtime configuration

(for Managed Coherence Servers)

Benefits

Pluggable custom configuration - no need to

extend internal Coherence classes

Moving towards removing XML requirement

to construct configuration

Minimize requirement to understand internal

Coherence classes work

Fully documented approaches for extension


Asynchronous Backups

Decouples backup operations

from application’s interaction

with the data grid

~40-50% reduction in request

latency

Speed vs consistency

guarantees

Primary Backup Client

1

2 2

3

Primary Backup Client

1

3

2

4

Synchronous

Asynchronous


Coherence Exabus Improvements

Stability Improvements

– Unsolicited disconnect handling

– Refined service join protocol

Improved Scalability:

– Leveraged MessageBus to remove logical

bottlenecks in the cache service tier

– Reduced per-connection CPU consumption

Reduced end-to-end latency

– Reduced number of per request context switches

Coherence on Exalogic


Install, Upgrade and Patching

Use common Fusion Middleware install, patching and upgrade technology

Three Coherence distributions

– Coherence ZIP Install Lightweight, development focused installer

Does not support Opatch

– Coherence Quick Install Lightweight, development focused installer

‘java –jar coherence_generic.jar’

Supports Opatch

– Coherence OUI Installer Oracle Universal Installer (GUI)

Production focused

Three WebLogic and Coherence Distributions

– WebLogic & Coherence ZIP Install (development)

– WebLogic & Coherence Quick Install (development)

– WebLogic & Coherence OUI Installer (production)


Managed Coherence Servers

Streamlined development and management environment

Introduces the Grid Archive (GAR)

– Follows the Java EE model

– Consolidates configuration into a single distributable entity

– Provides Application Isolation & Lifecycle Events

Leverages WebLogic infrastructure

– A Coherence container 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

– Release and install Coherence libraries on the system classpath (no need to package in your application)

Coherence remains available “standalone” including support for GARs

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/Coherence Managed Servers

Cluster

Cluster

Standalone Coherence Clusters


Benefits of Managed Coherence Servers

Simplified Operations Management

– Configure, manage and deploy Coherence from the WebLogic Server administration console

– Manage Coherence resources centrally

– Automatic WKA generation based on domain servers

– Tight Maven integration

– Rolling Restarts

Simplified development and deployment

– GAR manages all application build artifacts

– Simplified application deployment across entire data grid

– Based on industry standard Java EE

Easier integration for WebLogic Server-based applications that leverage Coherence


POF Configuration Generator

Generates POF configuration

file based on @Portable classes

Predictable type-id generation

Generational

– Accepts previous POF

configuration file

Operates against a GAR and

supported by maven GAR plugin

Can be invoked command line or

consumable API

dependency-1.jar

@Portable PofObject1@Portable PofObject2

dependency-2.jar


dependency-3.jar


POF Configuration Generator


Maven Sync Plugin

Maven Support

Seamless integration between Oracle Home

and Maven repositories.

Standardize Maven usage and naming

conventions.

Synchronize patches to Oracle Home with

Maven repositories.

GAR Archetype support.

GAR packaging type support for use with

WLS deploy plugin.

Oracle Home

Enterprise Maven

Repository

Development Environment

Production Environment

Coherence Use Cases

25

Seamless Consolidation

Data Grid Application Server

Cluster with multiple

JVMs / Managed

Application Server

Cluster with less

members and data

grid cluster

connected

• Application data can overwhelm available server

memory.

• Adding more application servers only compounds

problem.

• Each app server requires fixed overhead.

• Memory management issues.

• Keep application data outside the application

server.

• Instant 25% increase of users per WLS application.

• Scale application data linearly thru commodity

hardware.

• Increase availability thru data redundancy.

Challenges Benefits

26

DB Offload

Data Grid

Challenges Benefits • Limited/scalability on the data tier

• Improve latency on data access

• Improve overall performance of Application

• Local side cache boost reading operations

• DB offload (less reads and CRUD

operations performed in batch)

27

“Always On” Information

Challenges Benefits • Database failures can bring down an entire

web application.

• Restarting application servers impacts

current user sessions.

• Possible loss of “in-flight” transactions and

customer data

• De-couple in-flight transactions, state and

sessions from physical servers

• “Bounce” production servers without losing

any current user state or transactions

• Useful for failure scenarios, upgrades,

troubleshooting, etc.

Data Grid

In-F

ligh

t D

ata

Production Servers

Staging Servers

28

Cross-Application User Sessions

Challenges Benefits • Many user experiences are composed of

multiple physical web applications.

• Each web application denotes a unique

web session.

• User experience impacted by

unsynchronized sessions.

• Establish a single session across all web

applications with ActiveCache.

• Share current user state and behavior

information across applications.

• Eliminate timeouts and improve overall

user experience.

• Zero code changes

Benefits

Data

Grid

Web App1

Web App2

Web App2

29

Object Interoperability

Challenges Benefits • Share objects/behavior between different

programming languages

• Web Services are good in interoperability

bad in performance

• Faster than Java and .Net serialization

• Pure .Net client (a single .DLL is needed)

Data Grid REST

Coherence References

Coherence Mainframe Offload

• European FS group including 200

banks

• Commercial-Retail Banking,

Insurance

• Revenue: $3 B

• Customers: 1.4 M

Customers Profile

• WebLogic Portal

• WebLogic Server

• Coherence EE (30 caches)

• Linux / X86

Solution

• Customer service cost reduced by 40%

• Current and consistent data compared

to prior local cache solution

• ROI in about 2 months

• Rock Solid - in production without a

single incident

Customer Benefits

• Business logic and data on

Mainframe (MF)

• Cost growing exponentially when

MF accessed from UI apps

• UI Apps running on middleware

• Apps accessing up to 30

times/session

• 10 Million accesses per month

Customer Problems

Solution Architecture

Customer service cost reduced by 40%

ROI in about 2 months


Join the Coherence Community

http://coherence.oracle.com

@OracleCoherence

facebook.com/OracleCoherence

blogs.oracle.com/OracleCoherence

Oracle Coherence Users

youtube.com/OracleCoherence

coherence.oracle.com/display/CSIG Coherence Special Interest Group

"oracle coherence 12c technical preview" waldemar thiel, senior sales consultant, oracle...

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