cloud

Framework/service for hosting and managing files

Hi, in a webapp I'm building there is a planned side feature of supporting product illustrations and manuals (so pictures and PDFs), possibly arranged in galleries. As I'd rather not implement from scratch all of the uploading, managing and serving of this content, I'm looking for existing solutions which I could integrate. For example...

Versioned cloud-based social code snippet management

It seems a lot to ask, but I'm looking for a cloud-based solution to managing code snippets. I am looking for: Tags User accounts (I want to be able to see all of my snippets on a single page) syntax highlighting versioning - myself or others should be able to edit my snippets to improve them and have revisions save so that I can go b...

Cloud Apps and Single Sign-On (AD integration)

I've been investigating some cloud vendors and the ability to implement single sign-on with them, especially when it comes to AD (Active Directory) integration. So far I've learned that with Azure this is possible through ADFS and the AppFabric Access Control offer. In AWS, since it is possible to create a VPN and see EC2 instances as ...

HA with nginx and cloud environment

I have a node in cloud environment which is used now as nginx and mongrels behind it. This is what nginx config looks like: upstream mongrel { server 127.0.0.1:8000; server 127.0.0.1:8001; server 127.0.0.1:8002; } I want to achieve the following: add another node nginx has to know about this new node automatically witho...

Problem with copying local data onto HDFS on a Hadoop cluster using Amazon EC2/ S3.

Hi, I have setup a Hadoop cluster containing 5 nodes on Amazon EC2. Now, when i login into the Master node and submit the following command bin/hadoop jar <program>.jar <arg1> <arg2> <path/to/input/file/on/S3> It throws the following errors (not at the same time.) The first error is thrown when i don't replace the slashes with '%2F' ...

Cloud Database Service Latency/Performance

Hi All, I am running a heavy traffic site and our server is beginning to get to its limits, at the moment the entire LAMP stack is on one box (not ideal). I would like to move the database onto it's own box or onto a cloud service, but from my previous experience moving the database off the same box as the webserver increases the laten...

What technologies exist for app level clustering?

Let's say I have an application that is guaranteed to overwhelm one server even after optimizations. Is there a technology that allows a web application to be split over multiple servers while maintaining its state? Take for example a multiple player online game. Usually in World of War craft there are multiple servers with each one hav...

Tomcat cluster installation in a cloud

In a Cloud where multiple VMs are running and with IP addresses being dynamic (dhcp), what is the approach to set up a tomcat cluster. Kindly share your experiences and ideas. One way I can think of is that since dhcp address range is known, the worker.properties file could be created (generated) with all IP addresses in the given range...

Can I move my asp.net mvc app into microsoft cloud?

without making a lot of changes. Did anyone try it? Are there any known patterns to work with for cloud computing using Azure platform. ...

Can I architect a web app so it can be deployed to either the cloud or a dedicated server / VPS ? How?

Is there are an architecture versatile enough that it may be deployed to either a cloud server or to a dedicated (or VPS) server with minimal change? Obviously there would be config changes but I'd rather leave the rest of the app consistent, keeping one maintainable codebase. The app would be ASP.NET &/or ASP.MVC. My dev environment is...

Help me copy data over the Amazon's EC2 and run a script.

I am a novice as far as using cloud computing but I get the concept and am pretty good at following instructions. I'd like to do some simulations on my data and each step takes several minutes. Given the hierarchy in my data, it takes several hours for each set. I'd like to speed this up by running it on Amazon's EC2 cloud. After readin...

BPOS Single Sign on

Hi , I want to call BPOS and its functions from another web application. The web application uses the same credentials that I want to use with BPOS. I think BPOS doesnot supports Single Sign On (SSO). Is there any alternative to implement it? ...

Android - two way contact sync

Hey, I'm developing an application that needs a two way sync of its own custom contacts. I saw the sample code on Android developer website (talking about AccountManager here and the sample sync adapter code), but that only syncs from the cloud to the device. Is there a way to do the two way sync? Can someone point me in the right dire...

auto updating software on cloud.

I know wordpress,joomla,drupal etc ( most of php_mysql stack ) can auto detect update in software itself or/and plugin and either ask for user permission to update or auto update it. How to do similar thing on google app engine like cloud computing ? I am creating an open source software which is targeted towards non-computer people. ...

How can an application developer prepare for cloud?

As an application developer I mostly spend time with java, oracle stuff. I am not very good at linux/unix systems - in general system admin stuff. I am wondering how to prepare for this change in underlying infrastructure. What does it mean to application developers and how can/should they train themselves? Any books or resources? One th...

what is special about Cloud Computing?

Possible Duplicate: What is cloud computing? I read about Cloud Computing somewhere on the net and found out some thing like "The concept is similar to using E-Mail whereby we are not concerned about what happens with the server. We are only related to our mails."... What's getting me confused is that in case emailing concept ...

How to Log exceptions caught in WCF service deployed on Azure

Hi All, What is the best way to log the exceptions caught in WCF service hosted on cloud? ...

Issue with the configuration of HTTPS WCF hosted on Azure

Hi, I using a third party secure WCF service hosted on Azure . I am trying to create my own secure HTTPS service but I am not able to use it. I am able to host it on Azure however when I use it in a client application I got following error "There was no endpoint listening at https://xxxx.cloudapp.net/AsycServ/ AsycServCallback .svc tha...

How can I make R take advantage of a high memory, high cpu server?

SO I've finally figured out how to get my R scripts to run on the Amazon EC2 cloud. I've been using an AMI with 26 ECUs, 8 Cores, and 69 gigs of RAM. I then divide up my code into multiple scripts, and run each one in an instance of R. With a server of this size, I can easily run 20-40 scripts simultaneously, each running several 1000 s...

what is the difference between Space-based computing and Cloud computing.

Hello, I am new to the Cloud Computing world. So I yet to learn too many things about cloud computing. Yesterday, I was watching a video pod cast on space-based programming and through out the session, I felt that the whole concept of spaces sounds similar to cloud computing. After the session, I searched the web for understanding the di...