Sharding and Connection Pools

Hi we are looking at sharding our existing Java/Oracle based application. We are looking to make the app servers able to process requests for multiple (any?) shard. The concern that has come up is the amount of memory that would be consumed by having so many connection pools on one app server. Additionally there is concern about having so many physical connections to the database server coming from all the various app servers that may talk to that particular shard. I was wondering if anyone else has dealt with this issue and how you resolved it? Thanks, Scott

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Enterprise Architecture Conference by - John Zachman. Johannesburg (25th March) , Cape Town (27Th March) Dubai (23rd March)

Why You Need To Attend THIS CONFERENCE • Understand the multi-dimensional view of business-technology alignment • A sense of urgency for aggressively pursuing Enterprise Architecture • A "language" (ie., a Framework) for improving enterprise communications about architecture issues • An understanding of the cultural changes implied by process evolution. How to effectively use the framework to anchor processes and procedures for delivering service and support for applications • An understanding of basic Enterprise physics • Recommendations for the Sr. Managers to understand the political realities and organizational resistance in realizing EA vision and some excellent advices for overcoming these barriers • Number of practical examples of how to work with people who affect decisions on EA implementation • How to create value for your organization by systematically recording assets, processes, connectivity, people, timing and motivation, through a simple framework For registrations, group discounts or further details please contact Caroline.smith@icmgworld.com http://www.ITArchitectureSummit.com

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Advanced BPM program in USA and India discount for Group Membership

One day, Advanced BPM Certified program led by Global Leader, Steve Towers. Latest Case Studies and innovations - hands-on, practical. Event locations USA San Francisco 16 Mar 09 Atlanta 17 Mar 09 New York 19 Mar 09 Chicago 20 Mar 09 www.BESTBPMTRAINING.COM India Mumbai 23 Mar 09 Bangalore 24 Mar 09 Hyderabad 26 Mar 09 Delhi 27 Mar 09 www.BPMTRAININGNOW.COM For more information please visit For registrations, group discounts or further details please contact Caroline.smith@icmgworld.com

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Relating business, systems & technology during turbulent time -By John Zachman

If you want to understand Complexity and Contradiction in IT Architecture and struggling to manage non-adaptive and dysfunctional systems, you don't want to miss this. one day Certified conference by John Zachman in Dubai on 23rd March 2009. For more details visit http://www.EnterpriseArchitectureLive.com For registrations, group discounts or further details please contact Caroline.smith@icmgworld.com

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Learn how to manage change and complexity by Zachman Live.

John Zachman (Father of enterprise architecture) Given this renascent interest, who better to explain the principles behind Enterprise Architecture than the man himself, John Zachman, the originator of the " Zachman Framework for Enterprise Architecture" Join this workshop in Johannesburg 25th Mar 09 and Cape town in 27th March 09 and Mr.Zachman will explain how and why Enterprise Architecture provides measure, such an implementation is a daunting task with opportunities to fail lurking in many places. For more details visit http://www.ITArchitectureSummit.com For registrations, group discounts or further details please contact Caroline.smith@icmgworld.com

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GIS Application Hosting

Share the experience of hosting highly scalable/reliable GIS based application which involves Map Server, Spatially enabled database, j2ee, Routing Applications etc.

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Heavy upload server scalability

Hi, We are running a backup solution that uploads every night the files our clients worked on during the day (Cabonite-like). We have currently about 10GB of data per night, via http PUT requests (1 per file), and the files are written as-is on a NAS. Our architecture is basically compound of a load balancer (hardware, sticky sessions), 5 servers (Tomcat under RHEL4/5, ) and a NAS (nfs 3). Since our number of clients is rising, (as is our system load) how would you recommend we could scale our infrastructure? hardware and software? Should we go towards NAS sharding, more servers, NIO on tomcat...? Thanks for your inputs!

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Beta testers wanted for ultra high-scalability/performance clustered object storage system designed for web content delivery

DataDirect Networks (www.ddn.com) is searching for beta testers for our exciting new object-based clustered storage system. Does this sound like you? * Need to store millions to hundreds of billions of files * Want to use one big file system but can't because no single file system scales big enough * Running out of inodes * Have to constantly tweak file systems to perform better * Need to replicate content to more than one data center across geographies * Have thumbnail images or other small files that wreak havoc on your file and storage systems * Constantly tweaking and engineering around performance and scalability limits * No storage system delivers enough IOPS to serve your content * Spend time load balancing the storage environment * Want a single, simple way to manage all this data If this sounds like you, please contact me at jgoldstein@ddn.com. DataDirect Networks is a 10-year old, well-established storage systems company specializing in Extreme Storage environments. We've deployed both the largest and the fastest storage/file systems on the planet - currently running at over 250GB/s. Our upcoming product is going to change the way storage is deployed for scalable web content and we're seeking testers who can throw their most challenging problems at our new system. It's time for something better and we're going to deliver it.

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Where do I start?

Hello, I'm developing a product I thought of. As a part of it, I'm trying to figure out the best architecture for the product. It's a server application, what is supposed to serve A LOT of users at a time. Think of an IM application, but not web style, more like ICQ\MSN applications... With web orientation. I've read all about Meebo, Facebook Chat & etc architectures. But I'm still not sure where to start on ICQ style (this is the first phase before I go totally web). Can you direct me to some information on load balancing 10 million users? ;-) I just don't know here to begin... Thanks, Amit

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file synchronization solutions

I have two servers connected via Internet (NOT IN THE SAME LAN) serving the same website (http://www.ourexample.com).The problem is files uploaded on serverA and serverB cannot see each other immediately,thus rsync with certain intervals is not a good solution. Can anybody give me some advice on the following options? 1.NFS over Internet for file sharing 2.sshfs 3.inotify(our system's kernel does not support this and we donot want to risk upgrading our kernel as well) 4.drbd in active-active mode 5 or any other solutions Any suggestions will be welcomed. Thank you in advance.

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