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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.
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.
  • ...9 more annotations...
  • 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
Eric Swanstrom

Adopt Proper Cloud Methodologies and Utilize Cloud Applications for your business - 0 views

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    The #Cloud is increasingly becoming an emerging trend for the way processes are carried out at all levels of IT. The emergence of Cloud has encouraged rapid growth and scalibility. Cloud has changed the way these products are marketed. The Cloud has allowed CIO's to utilize technology to add a greater value to the businesses they are working for. This #WhitePaper helps you startegize on how to align your organizational needs to adopt the proper cloud methadologies. Vist http://fastbluenetworks.com/ and download it for free.
Ankit Jain

Cloud Computing - How to Deploy to Cloud and How Much - 0 views

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    Cloud computing is one of the most trending subjects in IT today. However, a lot of people are still unable to clearly identify what is the "Cloud"? How to use it? What are its benefits? And why is it gaining popularity? Learn how to make optimal and correct usage of cloud deployment technology. Cutting-edge advice from Atlogys IT consultants panel comprising of Ex-Googlers and Carnegie Mellon Computer Scientists. For cloud deployment architecture, visit http://www.atlogys.com/cloud-deployment-architecture
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    Cloud computing is one of the most trending subjects in IT today. However, a lot of people are still unable to clearly identify what is the "Cloud"? How to use it? What are its benefits? And why is it gaining popularity? Learn how to make optimal and correct usage of cloud deployment technology. Cutting-edge advice from Atlogys IT consultants panel comprising of Ex-Googlers and Carnegie Mellon Computer Scientists. For cloud deployment architecture, visit http://www.atlogys.com/cloud-deployment-architecture
Louis Martin

Just Right Monetary Way Out For Applicants At Emergency Time - 0 views

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    The compensation month to month credits are monthly loans that give quick money alleviation the upside of reimbursing the same in little and simple portions over a time frame. These advances are best accessible through the online mode as it is basic and helpful.
Louis Martin

Why Long Term Cash Loans Are A Favorable Financial Alternative? - 0 views

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    Are you encountering with cash crunches? Looking for the quick cash injection to overcome your tough financial phase?
Zac Mac

What are the Differences between Paid Web Hosting and Free Web Hosting? - 0 views

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    Do you ever wonder if you should go for free web #hosting or paid web hosting? Find out What are the Differences between Paid Web Hosting and #Free Web Hosting?
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    Do you ever wonder if you should go for free web #hosting or paid web hosting? Find out What are the Differences between Paid Web Hosting and #Free Web Hosting?
Zac Mac

What are the Best Cloud Storage Services? - 0 views

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    Whether you're going to use this for personal file #storage or for business use, the best cloud storage services are the ones that offer #security.
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    Whether you're going to use this for personal file #storage or for business use, the best cloud storage services are the ones that offer #security.
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) .
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
shai edrote

They Are the Best Computer Tech Specialists - 1 views

I called Fix Slow Computer Today because I wanted them to fix slow computer fast. I need their expert computer tech specialist to help me with my slow PC problem. I heard they are the best and trus...

Fix Slow Computer

started by shai edrote on 13 Jul 11 no follow-up yet
Orchestrate Technologies, LLC

SMAC-Social-Mobile-Analytics-Cloud.pdf - 0 views

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    SMAC is upsetting the domain. No CIO dialogue is accomplished devoid of considering influence of SMAC on industry and business. Rapid developments in this technology pile are accumulating value to complete breadth of businesses and industries. Rewards are several and appear very captivating, with assurances being made as big as - forecasting future (Analytics), accessible everywhere (Mobile), everything is so easy and networked (Social), and at a very low cost (Cloud). This fresh technology pile has begun changing tomorrow's organization and has influence on every part of a business, therefore consequently on the every software applications being utilize inside the company and by the company.
louis garcia

Browse and get the latest tech news about Dallas Cloud Programming - 1 views

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    Hire us to know more about what are cloud services and implementation in your business through dallas cloud programming services
Smith Jones

Automated Conference Calls for Business Conferencing Solution - 0 views

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    There are 3 types of automated conference calls: Audio conferencing, Web conferencing and Video Conferencing. It allows associates to conduct business together without having to travel to meet face to face.
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    There are 3 types of automated conference calls: Audio conferencing, Web conferencing and Video Conferencing. It allows associates to conduct business together without having to travel to meet face to face.
Smith Jones

Audio and Web Conferencing Services for Online Meeting Collaboration - 0 views

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    Audio and Web Conferencing Services are the most popular types of conferencing services. It provides engaging, powerful and cost-efficient alternative to in-person meetings and collaboration.
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    Audio and Web Conferencing Services are the most popular types of conferencing services. It provides engaging, powerful and cost-efficient alternative to in-person meetings and collaboration.
Smith Jones

Cloud Based Video Conferencing Services with InterCall Conferencing Solution - 0 views

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    Cloud-based video conferencing with InterCall conferencing solution are changing the world of business communication in the cloud providing cost saving, scalability, reliability, productivity and improved business relationships.
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    Cloud-based video conferencing with InterCall conferencing solution are changing the world of business communication in the cloud providing cost saving, scalability, reliability, productivity and improved business relationships.
Casey Wedge

Managed Cloud Services for High Performance Networks - 0 views

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    Fastblue is offering a range of managed cloud-based services as Cloud servers, Hosted backup, Data center services, Data recovery, Cloud Application Performance Management, Managed WAN Optimization services. These services are necessity for today's businesses to always on, always accessible-data and high performance network connectivity.
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    Fastblue is offering a range of managed cloud-based services as Cloud servers, Hosted backup, Data center services, Data recovery, Cloud Application Performance Management, Managed WAN Optimization services. These services are necessity for today's businesses to always on, always accessible-data and high performance network connectivity.
Casey Wedge

Cloud-based Data Center Services for More Advanced Security and Reliability - 0 views

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    Cloud Data Center Services offer many similar benefits of in-house data centers by saving your time, space and money. With Cloud-based solution your data is always accessible and you no longer need to worry about troubleshooting and expensive utilities. Millions of companies are making the move to it without having second thought. Now host your server with data center service and enjoy the services of this remarkable technology.
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    Cloud Data Center Services offer many similar benefits of in-house data centers by saving your time, space and money. With Cloud-based solution your data is always accessible and you no longer need to worry about troubleshooting and expensive utilities. Millions of companies are making the move to it without having second thought. Now host your server with data center service and enjoy the services of this remarkable technology.
enterprise cloud

Avail Best Big Data Hosting Services India - 0 views

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    Big data analysis and management are commonly heard term in today's era. Want to know more about big data hosting, which company offer hosting at superior price, etc.? Then visit us to know more…
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    Big data analysis and management are commonly heard term in today's era. Want to know more about big data hosting, which company offer hosting at superior price, etc.? Then visit us to know more…
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