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DJHell .

OpenSocial in the Cloud - OpenSocial - 0 views

  • Apps can grow especially fast on social networks, so before you launch your next social app, you should think about how to scale up quickly if your app takes off.
  • Unfortunately, scaling is a complex problem that's hard to solve quickly and expensive to implement.
  • If this app grows to serve millions of users and photos, shared hosting or even a dedicated server won't have the bandwidth or CPU cycles to handle all of the requests. We could invest in more servers and network infrastructure, shard the database, and load-balance requests, but that takes time, money, and expertise. If you'd rather work on the new features of the app, it's time to move into the cloud.
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  • It's important to focus on the interactions between the app and your server when designing an application that will run in the cloud. If we standardize the communication protocol and data format, we can easily change the server side implementation without modifying the OpenSocial app.
  • You can configure the makeRequest method to digitally sign the requests your app makes to your server using OAuth's algorithm for parameter signing. This means that when your server receives a request, it can verify that the request came from your application hosted in a specific container. To implement this, the calls to makeRequest in the OpenSocial app spec XML specify that the request should be signed, and the code that handles requests on the server side verifies that a signature is included and valid
  • When our server receives a request, we can verify that it came from our application by checking that the digital signature was signed by a valid container and that the application ID is correct.
  • Since our server isn't storing any relationship data, the app will need to send us a list of user IDs so we can fetch the appropriate photos.
  • Although it's outside the scope of this article, we could provide a mechanism for our OpenSocial app to request a one-time-use token that it would include in the request to upload a photo.
  • Note that the post data is URL-encoded in the request so the post method uses urllib.unquote before splitting the comma-separated list of person IDs.
  • Since the server doesn't store any relationship data, the PhotosHandler class checks the post data of the request for a list of IDs from the container.
  • A common misconception when coding in the cloud is that storage space, CPU cycles, and bandwidth are unlimited. While the cloud hosting provider can, in theory, provide all the resources your app needs, hosting in the cloud ain't free so these resources are limited by your budget. Luckily, OpenSocial provides several mechanisms to cache images and data that will reduce the load on your server.
  • In addition to reducing traffic to our server, this technique has the added benefit of being fast—requesting data from the Persistence API is much faster than making the round trip to your server.
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    Some OpenSocial apps can be written entirely with client-side JavaScript and HTML, leveraging the container to serve the page and store application data. In this case, the app can scale effortlessly because the only request hitting your server is for the gadget specification which is typically cached by the container anyway. However, there are lots of reasons to consider using your own server: * Allows you to write code in the programing language of your choice. * Puts you in control of how much application data you can store. * Lets you combine data from users on multiple social networks. * Enables interaction with the OpenSocial REST API. Setting up an OpenSocial app that uses a third party server is fairly simple. There are a few gotchas and caveats, but the real issues come up when your app becomes successful - serving millions of users and sending thousands of requests per second. Apps can grow especially fast on social networks, so before you launch your next social app, you should think about how to scale up quickly if your app takes off. Unfortunately, scaling is a complex problem that's hard to solve quickly and expensive to implement. Luckily, there are several companies that provide cloud computing resources-places you can store data or run processes on virtual machines. These computing solutions manage huge infrastructures so you can focus on your applications and let the "cloud" handle all the requests and data at scale. This tutorial focuses on a simple photo-sharing app that uses a third-party server to host photos and associated metadata. If this app is going to host millions of images and support many requests per second, we won't be able to run it on a single dedicated host. We'll break the app down and analyze the interactions between the OpenSocial App and the back end server. Then we'll implement the app in the cloud, first using Google App Engine, then leveraging Amazon's S3 data storage service. Finally, we'll look at s
anonymous

Jivespace: Jive Talks: XMPP (a.k.a. Jabber) is the future for cloud services - 0 views

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    Cloud services are being talked up as a fundamental shift in web architecture that promises to move us from interconnected silos to a collaborative network of services whose sum is greater than its parts. The problem is that the protocols powering current cloud services; SOAP and a few other assorted HTTP-based protocols are all one way information exchanges. Therefore cloud services aren't real-time, won't scale, and often can't clear the firewall. So, it's time we blow up those barriers and come to Jesus about the protocol that will fuel the SaaS models of tomorrow--that solution is XMPP (also called Jabber) .
Stian Danenbarger

Susan Brenner: "Privacy and the Cloud" - 1 views

  • the 4th Amendment was developed at a time when the only privacy was spatial privacy; for something to be private, I had to keep it IN my home or office (and maybe in a locked chest), which both made it difficult for law enforcement officers to gain access to it and symbolically invoked my right to assume they wouldn’t gain access to it. (In other words, I could assume privacy.)
  • our lives have already moved far beyond spatial privacy; I talked about the 4th Amendment’s application to the contents of emails and what we do online -- arguing that it should apply to both, but noting that courts so far do not tend to agree. I think cloud computing will take this analysis to the next level.
  • My point is that even under current 4th Amendment law, I can make what I think are valid arguments as to why the 4th Amendment should apply to data stored in a cloud (as long as the appropriate conditions exist). I really think, though, that we shouldn’t be using cases that were decided thirty years ago or a hundred and thirty years ago to set the standard for 4th Amendment privacy in an era of advancing technology. As I argued in that law review article, I think we need to move beyond a purely spatial approach to privacy to approaches that encompass both spatial and non-spatial privacy.
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    What about privacy in an era of cloud computing? If I store my data in a cloud, is the data in a "closed container" and therefore private under the 4th Amendment? Or is putting data in a cloud analogous to giving the numbers I dial on my phone to the phone company?
John Li

Learn about could computing | Eucalyptus Community - 0 views

shared by John Li on 30 Aug 10 - Cached
    • John Li
       
      like eucalyptus for the cloud computing
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    What is cloud computing? Cloud computing is the access to computers and their functionality via the Internet or a local area network. Users of a cloud request this access from a set of web services that manage a pool of computing resources (i.e., machines, network, storage, operating systems, application development environments, application programs). When granted, a fraction of the resources in the pool is dedicated to the requesting user until he or she releases them. It is called "cloud computing" because the user cannot actually see or specify the physical location and organization of the equipment hosting the resources they are ultimately allowed to use. That is, the resources are drawn from a "cloud" of resources when they are granted to a user and returned to the cloud when they are released. A "cloud" is a set of machines and web services that implement cloud computing.
Kelly Hair

VMware: VMware vCloud Blog: Thoughts Around Service Provider's Public Cloud Platforms - 0 views

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    "aaS Providers Shifting to Commercial VMs. IaaS (infrastructure as a service) providers have focused on open source and internal technologies to deliver solutions at the lowest possible cost. But that's changing. In the past year, there's been a rapidly growing trend for IaaS providers to add support for major commercial VM formats - especially VMware, but also Hyper-V and XenServer. The reason? To create an easy on-ramp for enterprises. As enterprises virtualize (and in many cases, build private clouds), the IaaS providers know that they need to make interoperability, hybrid, overdrafting, migration as easy as possible. The question is whether that will require commercial offerings (such as VMware's vCloud Datacenter Services, or Microsoft Dynamic Datacenter Alliance), or if conversion tools will be good enough. I tend to think that service providers better make the off-premises experience as identical to the on-premises experience as possible - and I'm not sure conversion will get them there."
Rich Hintz

cloud_cube_model_v1.0.pdf (application/pdf Object) - 0 views

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    aim of this paper is to: - point out that not everything is best implemented in clouds; it may be best to operate some business functions using a traditional non-cloud approach - explain the different cloud formations that the Jericho Forum has identified - describe key characteristics, benefits and risks of each cloud formation - provide a framework for exploring in more detail the nature of different cloud formations and the issues that need answering to make them safe and secure places to work in
Stian Danenbarger

Open Cloud Manifesto.org - 0 views

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    This document is intended to initiate a conversation that will bring together the emerging cloud computing community (both cloud users and cloud providers) around a core set of principles. We believe that these core principles are rooted in the belief that cloud computing should be as open as all other IT technologies.
Justin Pierce

Enjoy An Excellent Bookkeeping Service - 1 views

It is a small grocery with just 4 staff that I started 6 months ago. I thought I can smoothly run it on my own. But then I noticed that I always encounter troubles in doing the payroll and other mo...

started by Justin Pierce on 28 Dec 12 no follow-up yet
digitalhydcsg

In Public Cloud Computing Fight, the Gloves Come Off post by CIO.com - 0 views

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    Price cuts from Amazon, Google and Microsoft support predictions that the public cloud computing market is a race to the bottom -- for pricing, that is. Customers will no doubt benefit, but cloud providers who aren't one of those three companies should be prepared for a long, hard war of attrition.
Rich Hintz

Cloud Computing Poses E-Discovery, Legal Risks - 0 views

  • Cloud Computing Poses E-Discovery, Legal Risks April 10, 2009By Marty Foltyn ORLANDO, Fla. — Cloud computing was a hot topic at this week's Storage Networking World show, but one attorney sounded a warning note about the rush to the cloud. In a presentation titled "Computing (strike that — Litigation) in the Cloud," Steven Teppler, senior counsel at KamberEdelson in New York, said cloud computing and services are a corporate counsel's nightmare. The 2006 e-discovery amendments to the Federal Rules of Civil Procedure (FRCP) changed the legal and corporate information landscape, putting custody and control at top of mind. "Cloud computing means that data may always be in transit," said Teppler, "never anywhere, always somewhere." And that creates a big challenge for corporate counsel. How can they identify "who, when and where" in the cloud? How can organizations handle document retention? And to add another layer of worry, information targeted for the cloud may also be subject to laws requiring privacy and persistent data integrity, and other requirements that the storage manager may not even be aware of. Teppler spelled out the top cloud computing shortcomings: no native security attributes; inadequate or no security provisioning by providers; the lack of understanding of cloud legal issues (a real problem for not only cloud computing providers, but also corporate counsel and IT consultants); and the failure to recognize potential liability from either legal issues or a lack of security. Teppler told the audience that litigation in the cloud is already here. Users of cloud services will need to insist on service level agreement (SLA) terms with their providers to ensure legal and regulatory compliance, searchability, demonstrable customer care (security), provably persistent data integrity and reliability, and demonstrable storage security and integrity for electronically stored information in the cloud.
seth kutcher

Excellent Computer Repair Service - 1 views

My work relies heavily on computer. That is why I cannot afford to delay my report just because I am having computer problems. I bought this computer unit 5 years ago and maybe because it is alread...

computer repair

started by seth kutcher on 02 Nov 11 no follow-up yet
cecilia marie

Best Shield Against Computer Viruses - 1 views

I have always wondered why my files are often corrupted and to think that I have installed an antiVirus software. I always scan my external disks each time I insert them in my unit. It was only lat...

virus protection

started by cecilia marie on 04 Nov 11 no follow-up yet
Richard Boss

Top 5 cloud based data hosting options for mobile applications - 0 views

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    Cloud computing is nothing but a system that allows you to access your files and documents from anywhere in the world. Mobile applications have been a part of the revolution, and their presence on the cloud is of significant help to the developers. In this post you will see top 5 cloud based data hosting companies that assist developers in effectively extracting the benefits of cloud based hosting of mobile applications.
Casey Wedge

Limelight Content Storages Services for Faster Website's Content Delivery - 0 views

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    Limelight Content Storage is a tool that is employed to speed the delivery of your rich content to the end user and hosts it in the Cloud. Customers today are drawn to media rich websites but these same customers also have very high expectations of websites and do not have the patience to wait for slow video buffering or error messages. With so much business competition out there you need to ensure that your delivery is not detracting clients. If you use Limelight Content Storage your data will have a shorter distance to travel to reach your potential customer.
Jay Dee

Good SEO Staff and Services - 2 views

Nowadays, people do not use the yellow pages or go directly to the stores to buy something. They are taking advantage of the internet whenever they have to buy something. For that reason, I have a ...

SEO Perth

started by Jay Dee on 25 Jan 11 no follow-up yet
seth kutcher

The Best Remote PC Support I Ever Had - 1 views

The Remote PC Support Now excellent remote PC support services are the best. They have skilled computer tech professionals who can fix your PC while you wait or just go back to work or just simpl...

remote PC support

started by seth kutcher on 12 Sep 11 no follow-up yet
Rem PC

The Best Remote PC Support I Ever Had - 1 views

The Remote PC Support Now excellent remote PC support services are the best. They have skilled computer tech professionals who can fix your PC while you wait or just go back to work or just simply...

remote PC support

started by Rem PC on 12 Sep 11 no follow-up yet
Stian Danenbarger

Marc Andreessen: "The three kinds of platforms you meet on the Internet" (2007, retriev... - 1 views

  • Ning within our platform provides a whole suite of APIs for easily building social networking applications; Salesforce within its platform provides a whole suite of APIs for easily building enterprise applications; Second Life within its platform provides a whole suite of APIs for easy building objects that live and interact within Second Life. EC2, at least for now, has no such ambitions, and is content to be more of a generic hosting environment.
  • Akamai, coming from a completely different angle, is tackling a lot of the technical requirements of a Level 3 Internet platform in their "EdgeComputing" service -- which lets their customers upload Java code into Akamai's systems.
  • Amazon's FPS -- Flexible Payments Service -- is itself a Level 3 Internet platform.
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  • I think that kids coming out of college over the next several years are going to wonder why anyone ever built apps for anything other than "the cloud" -- the Internet -- and, ultimately, why they did so with anything other than the kinds of Level 3 platforms that we as an industry are going to build over the next several years -- just like they already wonder why anyone runs any software that you can't get to through a browser.
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    "This post is my attempt to disentangle and examine the topic of "Internet platform" in detail. I will go at it by identifying three distinct approaches to providing an Internet platform, and project forward on where I think each of the three approaches will go. At best, I might be able to help make a new landscape clear. At worst, hopefully I can at least provide one framework for future discussion."
digitalhydcsg

Midsize Insider: Cloud Computing Lessons from Federal Agencies - 0 views

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    Cloud computing is growing in use at federal agencies, according to a new survey that found that military, intelligence and civilian groups are rapidly adopting the cloud.
digitalhydcsg

Predictions for 2014 about Cloud Computing And Enterprise Software by Forbes - 0 views

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    Alan Kay's saying that the best way to predict the future is to create it resonates through the best cloud computing and enterprise software predictions for 2014. Constraints that held start-ups back from delivering sophisticated new apps and services are disappearing fast.  The dynamics of one of my favorite books
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