LOGIN | REGISTER NOW | SUBSCRIBE
 
 
News on Monday
more>>
SharePoint Tech Report
more>>


   

 
 
Download Current Issue
ISSUE 3/15/2010 PDF

Need Back Issues?
DOWNLOAD HERE

Receive the print Edition?


 
blogs tab
Google Code turns 5
Google Code Turns 5, and adds a Paxos Algorithm to make the system more stable and reliable.
03/17/2010 11:16 AM EST

Test your Visual Studio 2010 know-how
Microsoft is offering free beta certification exams for Visual Studio 2010.
03/17/2010 11:08 AM EST

Microsoft lifts the hood on IE9
Microsoft is previewing IE9.
03/16/2010 01:10 PM EST

 

Events calendar tab
EclipseCon
3/22/2010 to 3/25/2010
Santa Clara, Calif.
The Eclipse Foundation

DevConnections
4/12/2010 to 4/14/2010
Las Vegas
Penton Media

MySQL Conf. and Expo
4/12/2010 to 4/15/2010
Santa Clara, Calif.
O'Reilly Media

High Performance Computing Linux Financial Markets
4/19/2010
New York City
Flagg Management

Informix User Conf.
4/25/2010 to 4/28/2010
Overland Park, Kans.
IIUG


 
print Printable version 
Most Read Latest News Blog Resources
Mono brings .NET to Android
At Microsoft MIX, Mono will unveil the ability to port .NET applications to the Android op...

Does Windows cost Microsoft opportunities?
Microsoft's decision to focus .NET on Windows is stifling innovation due to the specter of...

Going 'all in' on .NET as default runtime
Programmers for Windows Phone 7 will need to use Silverlight and XNA for development

Digg!  Digg
Reddit  Reddit
Slashdot  Slashdot
Share on facebook  Facebook
Share on Twitter  Twitter

Getting 'Push' to Scale Is in the Cards


Kaazing creates platform for asynchronous request processing

By David Rubinstein
August 29, 2007 — 
If an online poker tournament next month works as it is supposed to, then—“ka-zing!"—Jonas Jacobi might just begin to cash out.

Jacobi is the founder and CEO of a company called Kaazing, which is creating a specification for pushing information in real time from a server to a client, without requests.

"The ability to push information from a server to a client has been around [for] about 10 years, but it can't scale because you need to keep each connection open," Jacobi said. "Currently, a Web client will request information every two seconds, or five seconds. That puts a burden on the server side, if 50,000 people want it at the same time."

The key to scaling server-client communication, Jacobi explained, is asynchronous request processing, which allows one thread to be shared among many connections, rather than providing a thread for each connection. "With [asynchronous request processing], the user initiates one request when he navigates to the page. If there's no information available, there is no communication between the server and client. No threads need to be kept open. When something happens, the server broadcasts it out simultaneously." A subscribe mechanism allows data to be pushed out on one thread, but all subscribers to that thread will see the message, Jacobi explained.

I’ll See Your Hand
Jacobi said the poker tournament, which will be launched at AJAXWorld in Santa Clara at the end of September, is a proof of concept. Every player will be able to see his opponents' face cards as they are dealt, and then see and respond to every wager, Jacobi said, without having to wait for a server to respond to the request. When the next cards are dealt, the images are simply broadcast to all players at the same time. Jacobi indicated this type of solution has applications for viewing sports online, or a transit authority keeping track of buses or trains, or in financial markets, where data is updated often and quickly.

Kaazing's commercial offering will be known as Enterprise Comet, and it's based on the open source Comet technology for enabling real-time messaging from a Web server to one or more browsers. It uses Java APIs for JMS, and EJB for business logic and queuing, and then a JVM that resides in a Java container such as Apache Tomcat, Sun's Project Glassfish or codehaus.org’s Project Jetty. For the poker project, Jacobi said Kaazing is partnering with Terracotta, because that company's JVM clustering environment will scale enough to meet the project’s requirements.

For developers working on real-time solutions, Jacobi said the learning curve will be low, because it's just Java. "The development environment and model don't change. At the end of the day, you're deploying to a Java container. There's no arbitrary language or XML framework. It's not like going from Java to Flash."


Share this link: http://www.sdtimes.com/link/31064
 

Add comment


Name*
Email*  
Country     


  • Comment
  • Preview
Loading