Wednesday Apr 09, 2014

AcivityBank Deliver Real-Time Travel Transfers Using Coherence and Weblogic 12c

ActivityBank, part of TUI, is a leading provider of travel transfers. It uses Coherence and Weblogic 12c to scale and accelerated its location based transfer service, calculating location based requests inside Coherence in just a few ms. Read their use case on the Coherence Special Interest Group (SIG) website here.[Read More]

Tuesday Apr 08, 2014

Canon: A "Snapshot" of Using Coherence, SOA and Exalogic for Millions of Transactions

Canon, one of the world's leading manufacturers of cameras, imaging and document technologies, is now able to deliver on performance of millions of real-time transactions with a new and improved system architecture. Based on Oracle SOA Suite, Oracle Coherence, Oracle Exalogic and more, the engineered systems advantage has provided scale, speed and simplicity.

If the video does not display properly, please see it here.

Thursday Apr 03, 2014

Coming Soon: April 17 Coherence SIG in New York

Another Coherence SIG will be in New York City on April 17th!



Oracle Office, 120 Park Avenue, 26th Floor
New York, NY
Google Map
Closest Subways:
Grand Central Station - (4, 5, 6, 7, 42nd Street Shuttle)
42nd St. Bryant Park - (B, D, V, F, 7)


Whether you're an experienced Coherence user, or new to Data Grid technology, the CSIG is the community for realizing Coherence-related projects and best practices. You won't want to miss our quarterly meetings, featuring some of the most active Coherence users as speakers and in the audience.

We hope to see you soon in New York City!

Thursday Feb 06, 2014

El Corte Inglés use Coherence to deliver up-to-date online inventory and delivery information

El Corte Inglés S.A., headquartered in Madrid, is the biggest department store group in Europe and ranks fourth worldwide. At a recent Coherence Special Interest Group meeting in Madrid they spoke about how they are using Coherence with Exalogic and ATG (part of the Oracle E-Commerce platform) to provide more up-to-date inventory and delivery information to their online customers. You can find the full presentation here: http://coherence.oracle.com/download/attachments/17662048/Coherence+-+The+Experience+at+El+Corte+Inglés.pdf[Read More]

NTT Communications Corporation process 1.4M packets p/s using Oracle Coherence

NTT Communications Corporation select Oracle Exalogic,  Oracle Coherence, Oracle Weblogic Server and Oracle Event Processing to maximise application performance and scalability, for a networking monitoring system that processes 1.4 million packets per second through in-memory streaming. Read the full story here.[Read More]

Thursday Dec 05, 2013

New: VisualVM Plugin for Coherence - released through the Coherence Incubator

We are excited to announce the availability of the Coherence VisualVM developer plug-in which is part of the new Coherence Incubator 12.1.0 release.

The community plug-in allows developers to view summarised Coherence related statistics and information when connected to a JMX enabled Coherence cluster.  Information is collected and summarised from the various Coherence MBeans and displayed in a tabular and graphical format. You also have the ability to select various services and caches to display more detailed node level information about each.

Once installed you will see an additional 'Coherence' tab, when you connect to your Coherence process which is running an MBean server. If you select of this tab, a 'Cluster Summary' tab will be displayed.

Cluster Overview

Features

The number of sub-tabs displayed varies depending upon what features you are using, but can include:

  • Cluster Overview - High-level information about the Coherence cluster including cluster name, version, member count and 'Cluster StatusHA'. Summary graphs show total cluster memory available and used, packet publisher and receiver success rates and load averages for machines running Coherence.
  • Machines - A list of the physical machines that make up the Coherence cluster as well as information about the load averages and available memory on these machines.
  • Members - The full list of Coherence members/nodes, including individual publisher/receiver success rates, memory and send queue sizes.
  • Services - Information about the running services including partition counts and statusHA values. If you select a service, on the next data refresh you will see detailed thread information for each node of the service as well as graphs of that information.
  • Caches - Displays information about any caches, including their size and memory usage information. To get the correct information to be displayed for memory usage, you must be using the binary unit-calculator. If you select a cache, on the next data refresh you will see detailed information about each node hosting that service and cache.
  • Proxy Servers - If your cluster is running proxy servers, this tab displays information about the proxy servers and the number of connections across each proxy server and total connections. You also have the ability to include or exclude the NameService.
  • Coherence*Web - If your cluster is configured for Coherence*Web, this tab displays information about the number of applications deployed, the number of HTTP sessions being stored as well as other information regarding session reaping.

A sample of the Members sub-tab is shown below, with visual clues - that are included on the various screens - to draw attention to potential issues.

Members

The Services sub-tab below shows how to select an individual service and monitor detailed metrics, like as thread utilisation.

Services

Getting the Plug-in

The plug-in is available from GitHub which hosts the source for the latest version of the Coherence Incubator (12.1.0).  The Incubator uses the Common Development and Distribution License (CDDL) license and the documentation, which includes how to build and install the plug-in, can be found here.  

A pre-built NetBeans Module (NBM) is available via search.maven.org or you can build as part of the Incubator above.

The VisualVM tool is available with any download of JDK 1.7 or at http://visualvm.java.net. The Coherence plug-in is designed to work with JDK 7 Update 40 and above. 

If your cluster is running on an earlier version of Java, you can still use the latest JVisualVM and connect remotely to your cluster to view statistics.

Note: This is a developer tool for viewing information about a single cluster at a time. Other monitoring tools such as Oracle's Enterprise Manager or other 3rd party tools are suited for enterprise level monitoring, management and alerting. 

Friday Nov 15, 2013

Coming Up: Coherence Special Interest Group (SIG) Meetings across Europe

December there will be a number of Coherence Special Interest Group (SIG) meetings around Europe. These are free to attend, just register on online agenda page. They include talks from customers, partners, consultants, engineers and product managers, and are great way to find out more about Coherence, hear what is coming up and seer how customers are using it. [Read More]

Hadoop MapReduce and Coherence - A Perfect Match

Leveraging existing powerful Coherence functionality, the solution combines the Real-Time/Fast-Data nature of Coherence In-Memory Data Grids with the popular Hadoop MapReduce API., giving developers the freedom to choose the most appropriate data-store while preserving their existing M/R assets.


[Read More]

Friday Nov 01, 2013

Coherence Community on Java.net

In this 19 minute video, Coherence engineers and architects discuss the evolution of the Oracle Coherence Community on Java.net and how developers can actively participate in product development through Coherence Community open projects.

You can visit the project at Java.net for a peek.

Monday Oct 28, 2013

Reminder: Free, Global, Virtual Developer Day November 5th

Just a quick reminder about the FREE virtual developer day focused on Coherence (and WebLogic) coming on November 5th.

This day, with content tailored for developers, will guide you through tooling updates and best practices around creating applications with WebLogic and Coherence as target platforms. We'll also explore advances in how you can manage your build, deploy and ongoing management processes to streamline your application's life cycle. And of course, we'll conclude with some hands-on labs that ensure this isn't all a bunch of made-up stuff - get your hands dirty in the code!

November 5, 2013
9am PT/12pm ET
REGISTER NOW


We're offering two tracks for your attendance, though of course you're free to attend any session you wish. The first will be for pure developers with sessions around developing for WebLogic with HTML5, processing live events with Coherence, and looking at development tooling. The second is for developers who are involved in the building and management processes as part of the application life cycle. These sessions focus on using Maven for builds, using Chef and Puppet for configuration and more.

We look forward to seeing you there - don't forget to invite a friend!

Friday Oct 25, 2013

Coherence on Exalogic: 6x Speeds on Half the Hardware is Possible

Recently, Oracle Coherence released its 12c version, focused on scalability and real-time data delivery. As part of the launch, we showcased Coherence's tight coupling with Exalogic Elastic Cloud. By leveraging the Inifiniband Fabric in Exalogic, Coherence can now operate at up to 6x the speed on as little as half the hardware on an Exalogic box. This breakthrough is helping customers save money on their hardware costs while improving performance of their data grid.

Here's a free resource available for you to explore this technology relationship further.



For even more information on Coherence, attend our upcoming free virtual developer day on November 5th to see how developers can leverage Coherence in their everyday tasks.

Thursday Oct 17, 2013

Query optimization using composite indexes

Queries are a common feature of many Coherence applications, but when used with online eCommerce application great performance is crucial. Here Xavier March steps through the query optimisations he made for a real-world application and shares the amazing difference each successive optimisation made.  [Read More]

Monday Oct 14, 2013

Coherence Virtual Developer Day: November 5th

We're excited to announce an upcoming FREE virtual developer day focused on Coherence and WebLogic.

This day, focused on developers, will guide you through tooling updates and best practices around creating applications with WebLogic and Coherence as target platforms. We'll also explore advances in how you can manage your build, deploy and ongoing management processes to streamline your application's life cycle. And of course, we'll conclude with some hands-on labs that ensure this isn't all a bunch of made-up stuff - get your hands dirty in the code!

November 5, 2013
9am PT/12pm ET
REGISTER NOW


We're offering two tracks for your attendance, though of course you're free to attend any session you wish. The first will be for pure developers with sessions around developing for WebLogic with HTML5, processing live events with Coherence, and looking at development tooling. The second is for developers who are involved in the building and management processes as part of the application life cycle. These sessions focus on using Maven for builds, using Chef and Puppet for configuration and more.

We look forward to seeing you there, and don't forget to invite a friend!

Thursday Oct 10, 2013

Coming: Coherence SIG in Sydney, Australia

The next Oracle Coherence Special Interest Group (SIG) meeting will be held in Sydney, Australia on Thursday October 24th. We'll be at the Park Hyatt Sydney, in The Rocks, between 9am and 5pm.

Coherence SIGs are dedicated to involving the broad Coherence community in knowledge-sharing, awareness, best practices and discussion around Coherence, and this event is no different! The agenda includes both customer and partner presentations, as well as presentations from Coherence engineering team members and product managers.

Please see the Coherence SIG page for more information and to register.

We look forward to seeing you there in a couple of weeks!

Wednesday Oct 02, 2013

Spotlight on an ACE: René van Wijk

Oracle ACEs and Oracle ACE Directors are known for their strong credentials as Oracle community enthusiasts and advocates, with candidates nominated by anyone in the Oracle Technology and Applications communities. They provide not only external expertise on Oracle products, but also real-world examples and implementations of the Oracle stack, including many experts on Coherence and WebLogic.

One such expert is René van Wijk, who calls the Netherlands home, and is an active member of the ACE community, and works regularly with Coherence.
René is a graduate of the Delft University of Technology. Since then he has been with working with much of the Oracle stack (including WebLogic and Coherence), and is also an expert in many open standard frameworks. René transfers his knowledge and experience regularly through training, publications and presentations at Oracle-related seminars and conferences.

René, most importantly, likes to relax; travel (for leisure and take photos), watch movies, listen to some fine music, and enjoy nature hikes.

Looking for some Coherence insight from René? You'll find a ton of resources on his site, Middleware Magic. 

Follow René on Twitter: @Middlewaremagic

Want more information on becoming an Oracle ACE? See how this recognition can benefit you, and the community.
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