cloud

Are there any portable Cloud APIs that allow you to easily change cloud hosts?

I am creating a web-based RESTful service and want to cloud-enable it for scalability. I don't want to get locked into one cloud provider though. I'd like to be able to switched between Go Grid or Amazon EC2, etc. as pricing and needs evolve. Is there a common API to control the launch, monitoring and shutdown of cloud resources? I'v...

Drawbacks of Windows Azure Platform?

It seems that documents available now are only whitepapers from Microsoft. So I only heard about advantages of this platform. I want to know about its drawbacks. What components/features of Windows Azure/SQL Azure/AppFabric make you uncomfortable? Which ones do you want to change/improve? Thank you so much for this. ...

Are batch mutations atomic in Cassandra?

The Cassandra API supports batch mutations: batch_mutate(keyspace, mutation_map, consistency_level): Executes the specified mutations on the keyspace. mutation_map is a map>>; the outer map maps the key to the inner map, which maps the column family to the Mutation; can be read as: map>>. To be more specific, the outer ...

Will "Programming in the Cloud" Ever Take off?

Just got a chance to try out a cloud programming environment that let's you develop .net apps within the browser (http://coderun.com/ide/) I found it pretty interesting, since I was able to develop a mockup ASP.net site on an IPad. With javascript engines in browsers becoming faster and faster, cheap server infrastructure to compile o...

Does migrating a site that is 99% several megs of static HTML from Apache to Google App Enging make sense?

I have a large site of mostly static content, and I have entertained migrating to Google App Engine. I am wondering, not so much if it is possible as whether that is cutting a steak with a screwdriver. I see a way to do it in Django that has a bad design smell. Does migrating a literature site that is largely static HTML from Apache to...

Google App Engine: Which is its RDBMS?

According to this: http://code.google.com/appengine/docs/whatisgoogleappengine.html it seems that GAE only uses Datastore to store data, which is equivalent with Table service on Windows Azure Platform. Does anyone know that which RDBMS it uses? or such thing exists or not? EDIT: Windows Azure Platform, a cloud-computing platform by ...

Moving a ASP.NET application to the cloud

I am new to cloud computing, so please bear with me here. I have an existing ASP.NET application with SQL Server 2008 hosted on a Virtual Private Server. Here's what it briefly does: The front end accepts user's requests and adds them to a DB table A Windows Service running in the background picks up the request, processes it and sets ...

Is it possible to use the Spread Toolkit on Amazon EC2?

The Spread Toolkit (http://www.spread.org) allows for easy distributed messaging using publish-subscribe semantics. Is it possible to use this toolkit on EC2? What other pub-sub message buses can be used on EC2 (other than Amazon's SQS)? ...

Azure : The process cannot access the file "" because it is being used by another process.

Hi all, I am trying to get a matlab-compiled exe running on Azure cloud, and for that purpose need to get a v78.zip onto the local storage of the cloud and unzip it, before I can try to run an exe on the cloud. The program works fine when executed locally, but on deployment gives and error at line marked below in the code. The error is ...

What considerations should be made for a web app to be released on a cloud hosted system?

I have a web app that is primarily a WordPress app, but it pulls content from a Django app, simply by calling a service that uses Django models. My understanding of cloud computing is a bit vague. If the site needs to scale up with short notice, does the cloud provider (Amazon, Rackspace, whomever) simply spin up new instances (copies) ...

Which do I select - Windows Azure or Amazon EC2 - for hosting unmanaged C++ code?

We have a server solution written entirely in unmanaged Visual C++. It contains complicated methods for really heavy data processing. The whole thing contains millions lines of code, so rewritning it all in some other language is not an option. We could write some extra code or make isolated changes, but rewriting everything is out of t...

How to evaluate "enterprise" platforms?

Hi all, I'm tasked with evaluating an "enterprise" platform for the next-gen version of a product. We're currently considering two "types" of platforms - RAD (workflow engine, integrated UI, small cores of "technology plugins" to the workflows, automatic persisting of state...) like SalesForce.com / Service-Now.com and "cloud based" (E...

Cloud sync between iPad/iPhone app

I have a Core Data app that will end up being an iPhone/iPad universal application. I would like to implement cloud syncing so that an iPhone and an iPad both running the app could share data. I'm planning to use the recently released Dropbox API. Does anyone have any thoughts on the best way to go about doing this? The Dropbox API allo...

is windows azure installable on my own hardware ?

I just want to know if it is possible to install windows azure or any other cloud technology on your own hardware, or the only possibility to use it is to use the Microsoft's hosting ? is IBM Cloud Burst a cloud OS that you can install on your own hardware ? ...

Why 2 kinds of AppFabric?

I see that we now have both Windows Server AppFabric and Azure AppFabric. Is this just a namespace collision in the Microsoft marketing department or do these technologies share common interfaces? Someone told me that is was possible to run an application using Azure AppFabric on a local production server, then change the deployment ta...

What libraries exist for Regression or Ordinary-Least-Squares on Amazon EC2?

What libraries or services exist to run logistic or linear regressions in a distributed fashion on cloud providers like EC2? Alternatively, what Ordinary Least Squares regression libraries exist for cloud distribution? The data set is far larger than can fit in memory - so the library must handle this constraint. ...

Whats new in cloud computing

Cloud computing is quite similar to using email servers. But this emailing seems so familiar that I don't see any new concepts in this cloud computing. Please tell me what is special about this concept? ...

Cloud computing: Learn to scale server up/down automatically

I'm really impressed with the power of cloud computing when it comes to the possibility to scale up and down your facilities depending on your load. How can I shift my paradigm and learn to write my applications in that way? Write it once and forget(no matter of the future load) would be the best solution. How can I practice my skills ...

Azure Service Bus equivalent??

I've been studying Azure's Service Bus and was wondering... Are there any equivalent services provided by other cloud vendors such as AWS, Rackspace or App Engine? I read in a blog post that it would be possible to install ESB solutions such as Apache ServiceMix into IaaS providers' instances. Yet, I am not sure if they offer the same k...

Which Amazon Web Service is right for facilitating payments when providing software-as-a-service?

I need to redesign my server solution for usage as software-as-a-service. Currently the user has to install the Manager service on one machine in the LAN and one or more Processor service instances on other machines. He then puts files to process into a select folder, the Manager service fetches the files, sends them to Processor instan...