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From the Blogosphere Does Your Cloud Quiesce? It Should
Without the ability to gracefully shutdown the "contraction" side of elasticity may be problematic
Feb. 27, 2013 09:00 AM
Quiescence, in a nutshell, is your mom telling you to "finish what you're doing but don't start anything new, we're getting ready to go".
It's an integral capability of load balancers (of enterprise-class load balancers, at least) that enables the graceful shutdown of application instances for a variety of purposes (patches, scheduled maintenance, etc... ).
In more modern architectures this capability forms the foundation for non-disruptive (and thus live) migration of virtual machines.During the process the VM is moved and launched in location Y, the load balancer continues to send requests to the same VM in location X. Once the VM is available in location Y, the load balancer will no longer send new requests to location X but will continue to manage existing connections until they are complete.
Cloud bursting, too, is enabled by the ability of a load balancer to quiesce connections at a global layer (virtual pattern) and at the local layer (bridged pattern).
Load balancers must be able to support a "finish what's been started but don't start anything new" mode of operation on any given application.
The inability of a load balancing service to quiesce connections impacts not only the ability to implement specific architectural patterns, but it can seriously impact elasticity.
The IMPACT on ELASTICITY
Scaling out is easy, especially in the cloud. Add another instance of the application to the load balancing service and voila! Instant capacity. But scaling back, that's another story. You can't just stop the instance when load contracts, because, well, any existing connections relying on that instance will simply vanish. It's disruptive, in a very negative way, and can have a real impact on revenue (what happened to my order?) as well as productivity (that was three hours of work lost, OMERGERD).
Scaling back requires careful collaboration between the load balancing service and the management framework to ensure that the process is graceful, that is, non-disruptive. It is unacceptable to business and operational stakeholders to simply "cut off" connections that may in the middle of executing a transaction or performing critical business functions. The problem is that the load balancing service must be imbued with enough intelligence to discern that there is a state between "up" and "down" for an instance. It must recognize that this state indicates "maintain, but do not add" connections.
It is this capability, this stateful capability, that makes it difficult for many cloud and SDN-related architectures to really support the notion of elasticity at the application services layer. They might be able to scale out, but scaling back in requires more intelligence (and stateful awareness) than is currently available with most of these solutions. Read the original blog entry...
About Lori MacVittieLori MacVittie is responsible for education and evangelism of application services available across F5’s entire product suite. Her role includes authorship of technical materials and participation in a number of community-based forums and industry standards organizations, among other efforts. MacVittie has extensive programming experience as an application architect, as well as network and systems development and administration expertise. Prior to joining F5, MacVittie was an award-winning Senior Technology Editor at Network Computing Magazine, where she conducted product research and evaluation focused on integration with application and network architectures, and authored articles on a variety of topics aimed at IT professionals. Her most recent area of focus included SOA-related products and architectures. She holds a B.S. in Information and Computing Science from the University of Wisconsin at Green Bay, and an M.S. in Computer Science from Nova Southeastern University.
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Cloud Expo 2012 East Opening Keynote by SHI
In this Cloud Expo Keynote, Henry Fastert, SHI's Chief Technologist and Managing Partner, will share insight on how the latest generation of cloud computing is now capable of addressing the needs of the enterprise mission critical applications. These mission-critical applications require computing infrastructure that is secure, optimizes performance, and is highly resilient. The purpose of the keynote is to highlight how the latest cloud computing designs have evolved in terms of security, availability, and overall service quality to meet the needs of mission critical applications.
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John Engates, CTO of Rackspace Hosting Live From New York City
Last year, cloud computing pundits predicted that 2012 would be the year when the clouds would open. They were right as cloud computing enthusiasts all over are embracing the open ecosystem; however, denying one vendor the right to serve as the de facto API is only the tip of the iceberg of this computing climate change. Join Rackspace Chief Technology Officer John Engates as he discusses the open ecosystem and how ultimately, winning cloud technologies will be based on the ecosystem they represent.
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Keynote: Step up to a Higher Cloud
Cloud is a transformational shift in computing that can have a powerful effect on enterprise IT when designed correctly and used to its full potential. Join Citrix in a discussion that centers on building, connecting and empowering users with cloud services and hear examples of how enterprises are solving real-world business challenges with an architecture and solution purpose-built for the cloud.
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A Pragmatic Journey to the Cloud
As enterprise adoption of cloud computing accelerates, organizations must have a strategy and roadmap for moving to the cloud. Faced with different options including building a private cloud, subscribing to public clouds, or leveraging a hybrid cloud, organizations need a rational and pragmatic approach. This session explores the emerging trends in cloud computing and offers best practices for how organizations can successfully navigate a journey to the cloud.
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Cloud Expo Breaking News By Liz McMillan  Many have heard of OAuth but are unsure of how it might apply to their business.
In his session at the 12th International Cloud Expo, Alistair Farquharson, CTO of SOA Software, will describe how OAuth can be used to facilitate certain business models and simplify the sharing of private data.
Alistair Farquharson is a visionary industry veteran focused on using disruptive technologies to drive business growth and improve efficiency and agility within organizations. As the CTO of SOA Software A... May. 23, 2013 11:14 AM EDT Reads: 277 | By Elizabeth White  “Cloud has everything to do with what has happened with Big Data,” explained Jason Deck, Director of Strategic Alliances at Logicworks, in this exclusive Q&A with Cloud Expo Conference Chair Jeremy Geelan. “Big Data doesn’t exist in its easily accessible way without cloud. From reduced startup costs, to cheap storage, to fast processing, to adequate security, to the easy incorporation of third-party analytics tools, cloud made Big Data accessible to customers of all sizes, with all different bud... May. 23, 2013 11:00 AM EDT Reads: 1,104 | By Pat Romanski  SYS-CON Events announced today that nfina Technologies, a provider of highly reliable cloud server products, will exhibit at SYS-CON's 12th International Cloud Expo, which will take place on June 10–13, 2013, at the Javits Center in New York City, New York.
nfina Technologies develops, manufactures, and markets highly reliable cloud server products, designed to solve the most demanding data center requirements in mission-critical cloud applications. Nfina’s staff has decades of experience in co... May. 23, 2013 11:00 AM EDT Reads: 981 | By Liz McMillan  “Social, mobile, analytics and cloud can’t be looked at as distinct technology trends; they are facets of the same movement and an everyday reality for consumers and businesses alike,” said Craig Sowell, IBM VP of SmartCloud Marketing, in this exclusive Q&A with Cloud Expo Conference Chair Jeremy Geelan. “This means that businesses need to start looking at trends as one: cloud is the delivery, analytics is the unique insight, social is a shareable service, and mobile is the ubiquitous access.”
... May. 23, 2013 10:00 AM EDT Reads: 977 | By Pat Romanski  In his session at the 12th International Cloud Expo, Dave Eichorn, Global Data Center Practice Head at Zensar, will share a case study describing how a utility services company handled the migration of its Microsoft platform to the cloud. Challenged with the time-consuming task of opening operations out of temporary offices, this company struggled with the need to simultaneously access data that was accumulated from a vast amount of data-intensive jobs. Zensar migrated the company’s application ... May. 23, 2013 10:00 AM EDT Reads: 977 | By Liz McMillan  Organizations across the world are increasingly starting to see the benefits of moving more and more services to the cloud. The focus on the cost-saving potential of cloud is rapidly shifting to completely transforming the business with cloud. As organizations are investing enormous sums on technology they are starting to realize that in order to maximize the return on investment and accelerate the business transformation process the first area of focus should be people. By ensuring the organiza... May. 23, 2013 09:45 AM EDT Reads: 869 | By Elizabeth White  You're getting pitched every day from your legacy enterprise software and hardware vendors about "cloud." They're doing an amazing job of convincing your CIO and CTO about what cloud is and how you should use it. The reality is they're defending their shrinking market share and keeping you on the legacy treadmill for as long as they can by selling you solutions that aren't "cloud."
In her session at the 12th International Cloud Expo, Niki Acosta, Cloud Evangelista for Rackspace, will talk thro... May. 23, 2013 09:38 AM EDT Reads: 371 | By Elizabeth White  As enterprises deploy private IaaS clouds into production they are reevaluating their future application delivery models. SUSE and WSO2 believe that private PaaS will leverage the automation and scalability of Private IaaS solutions, such as OpenStack-based SUSE Cloud, to deliver the secure, standardized development environments that will make migrating to an agile, serviceoriented delivery model possible.
In their session at the 12th International Cloud Expo, Chris Haddad, VP of Technology Ev... May. 23, 2013 09:00 AM EDT Reads: 1,304 | By Jeremy Geelan  The new open source cloud orchestration platform called OpenStack is the promise of flexible network virtualization, and network overlays are looking closer than ever. The vision of this platform is to enable the on-demand creation of many distinct networks on top of one underlying physical infrastructure in the cloud environment. The platform will support automated provisioning and management of large groups of virtual machines or compute resources, including extensive monitoring in the cloud. May. 23, 2013 06:30 AM EDT Reads: 2,854 | By Jeremy Geelan  Everyone is virtualizing, but are they realizing any of the promised savings? This overview of IBM's new virtualization optimization solutions will show you how integrated Cloud Solutions like SmartCloud Provisioning and SmartCloud Monitoring can deliver the savings virtualization promises.
Organizations are using intelligent management and analytics to provide the insight needed to optimize their virtualized infrastructure and dramatically improve availability, reduce data storage footprint... May. 23, 2013 06:15 AM EDT Reads: 2,095 |
Top Stories for Cloud Expo 2012 East
... (more)
Best Recent Articles on Cloud Computing & Big Data Topics  By Jeremy Geelan The Arlington, Virginia-based National Science Foundation has just released its "Report on Support for Cloud Computing" - in response to the America Competes Reauthorization Act of 2010, Section 524.
It is an absolute must-read for all concerned with current and future research projects in Cloud Computing. Reads: 8,378  By Jeremy Geelan "The volume of data we're generating now from machines pales in comparison to the volume of data we'll soon generate from our own bodies," says data security expert Dave Asprey. Writing in a Trend Micro blog, Asprey - who is one of the leaders in the emerging Quantified Self movement - explains his vision of a world in which personal biometrical data is shared via the cloud. Reads: 14,439  By Wolfram Jost Cloud computing has caught the attention of business leaders around the world in every
industry because of its enormous transformative potential. Visionary companies know that
the value of the cloud is far greater than the current focus solely on technology and operating
costs: when combined with a collaborative approach to designing processes, cloud computing
will change how we do business.
Reads: 19,941  By Elizabeth White Want to make sense of the hottest new concept in Enterprise IT?
Want to understand in just hours what experts have spent many hundreds of days deciphering?
Cloud computing is a technology that has rapidly evolving peppered with a lot of hype along the way. Customers find it hard to navigate through this and make sense of what aspects of this technology will give them real business benefit.
Cloud Computing Bootcamp, led by our 2013 Bootcamp Instructor Larry Carvalho, is a great way to get a practical understanding of this technology. We offer multiple days of actionable insight into what vendor offerings are currently available and help you comprehend their strategy.
The ever-popular Bootcamp, which is now held regularly around the world, is being held in conjunction with the 12th Cloud Expo, June 10-13, 2013, at the Javits Center, New York, NY. Reads: 10,494  By Larry Bettino Did you know that ninety percent of the data in the world has been created in the last two years? Every day, we create 2.5 quintillion (or 2.518) bytes of data, according to IBM.
As corporations across all industries globally are struggling with how to retain, aggregate and analyze this mounting volume of what the industry refers to as Big Data, it also provides a unique opportunity for innovative startups that recognize the business prospects Big Data presents. Big Data is not just unlocking new information but new sources of economic and business value.
Interactivity is driving Big Data, with people and machines both consuming and creating it. Digital companies focused on becoming good at aggregating and analyzing the data created by the end users of their product, who then provide their customers with solid insights taken from that data are at a distinct competitive advantage over others in the marketplace. Reads: 8,318  By Elizabeth White Industry-specific clouds are those PaaS, IaaS, and PaaS services that are tailored for a specific vertical, such as transportation, retail, finance, and health care. IDC sees a $65 billion market in these industry solutions for 2013, rising to $100 billion in 2016.
The value of industry-specific clouds is that businesses within a vertical can connect to applications, processes, and databases that are pre-defined for that vertical within a public or private cloud. They can extend processes and databases into the business domain, versus defining the data and processes within a generic cloud-based platform.
So, are industry specific clouds right for your business? What options are out there? How do you figure out the ROI? Reads: 6,138  By Pat Romanski SYS-CON Events announced today that Rackspace Hosting, the open cloud company, has been named "Platinum Plus Sponsor" of SYS-CON's 12th International Cloud Expo, which will take place on June 10-13, 2013, at the Javits Center in New York City, New York.
Rackspace® Hosting (NYSE: RAX) is the open cloud company, delivering open technologies and powering more than 205,000 customers worldwide. Rackspace provides its renowned Fanatical Support® across a broad portfolio of IT products, including Public Cloud, Private Cloud, Hybrid Hosting and Dedicated Hosting. Rackspace has been recognized by Bloomberg BusinessWeek as a Top 100 Performing Technology Company, is featured on Fortune's list of 100 Best Companies to Work For and is included on the Dow Jones Sustainability Index. Rackspace was positioned in the Leaders Quadrant by Gartner Inc. in the "2011 Magic Quadrant for Managed Hosting." Rackspace is headquartered in San Antonio with offices and data centers around the world.  By Liz McMillan 10th International Cloud Expo, held on June 11-14, 2012 at the Javits Center in New York City, featured four content-packed days with a rich array of sessions about the business and technical value of cloud computing led by exceptional speakers from every sector of the cloud computing ecosystem.
The Cloud Expo series is the fastest-growing Enterprise IT event in the past 10 years, devoted to every aspect of delivering massively scalable enterprise IT as a service.
We invite you to enjoy our photo album of the show - we'll be adding new images all week. Reads: 8,950  By Carmen Gonzalez Ulitzer.com announced "the World's 30 most influential Cloud bloggers," who collectively generated more than 24 million Ulitzer page views. Ulitzer's annual "most influential Cloud bloggers" list was announced at Cloud Expo, which drew more delegates than all other Cloud-related events put together worldwide. "The world's 50 most influential Cloud bloggers 2010" list will be announced at the Cloud Expo 2010 East, which will take place April 19-21, 2010, at the Jacob Javitz Convention Center, in New York City, with more than 5,000 expected to attend. Reads: 45,821  By Kevin Hartig Cloud computing is becoming one of the next industry buzz words. It joins the ranks of terms including: grid computing, utility computing, virtualization, clustering, etc.
Cloud computing overlaps some of the concepts of distributed, grid and utility computing, however it does have its own meaning if contextually used correctly. The conceptual overlap is partly due to technology changes, usages and implementations over the years.
Trends in usage of the terms from Google searches shows Cloud Computing is a relatively new term introduced in the past year. There has also been a decline in general interest of Grid, Utility and Distributed computing.
Likely they will be around in usage for quit a while to come. But Cloud computing has become the new buzz word driven largely by marketing and service offerings from big corporate players like Google, IBM and Amazon. Reads: 199,700  By Elizabeth White SYS-CON Events announced today that Dell Inc. has been named "Silver Sponsor" of SYS-CON's 12th International Cloud Expo, which will take place on June 10-13, 2013, at the Javits Center in New York City, New York.
For more than 28 years, Dell has empowered countries, communities, customers and people everywhere to use technology to realize their dreams. Customers trust Dell to deliver technology solutions that help them do and achieve more, whether they're at home, work, school or anywhere in their world. Learn more about Dell's story, purpose and people behind its customer-centric approach. Reads: 2,702  By Liz McMillan One of the most compelling promises of the cloud is that you can pull out a credit card and be working in minutes. No purchase orders to fill out, no equipment to wait for on the loading dock. Just instant access to the resources you need, when you need them. But accessibility comes at a price, and an unintentional consequence may be that you create yet another orphaned identity silo. Enterprise IT has spent years consolidating its mishmash of directories, only to discover that cloud now threatens to turn back their hard-won victories.
In his session at the 12th International Cloud Expo, Scott Morrison, CTO and Chief Architect at Layer 7 Technologies, will look at strategies to incorporate identity into cloud applications. Enterprise identity or social login can both be a part of your go-to-cloud strategy, but you must plan for this upfront, rather than try to retrofit identity and access control at a later date. Reads: 3,059 By Roger Strukhoff Cloud Expo, Cloud Expo East, Cloud Expo West, Cloud Expo Silicon Valley, Cloud Expo Europe, Cloud Expo Tokyo, Cloud Expo Prague, Cloud Expo Hong Kong, Cloud Expo Sao Paolo are trademarks and /or registered trademarks (USPTO serial number 85009040) of Cloud Expo, Inc. Reads: 16,986 |
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Introducing
There is little doubt that Big Data solutions will have an increasing role in the Enterprise IT mainstream over time. Get a jump on that rapidly evolving trend at Big Data Expo, which we are introducing in June at
Cloud Expo New York.
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Cloud Expo was a fantastic event for CSS Corp - we easily exceeded our objectives for engaging with clients and prospects." |
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AHMAR ABBAS
SVP, Global Infrastructure Management, CSS Corp. |
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With our launch at Cloud Expo, we successfully transformed the company from a relatively unknown European player into the dominant player in the market. Our competitors were taken by surprise and just blown away. We got a huge number of really high quality leads..." |
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PETE MALCOLM
CEO, Abiquo |
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We were extremely pleased with Cloud Expo this year - I’d say it exceeded expectations all around. This is the same info we got from partners who attended as well. Nice job!" |
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MARY BASS
Director of Marketing, UnivaUD |
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Cloud Expo helps focus the debate on the critical issues at hand in effect connecting main street with the next frontier." |
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GREG O’CONNOR
President & CEO, Appzero
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SYS-CON Media has a flourishing Media Partner program in which mutually beneficial promotion and benefits are arranged between our own leading Enterprise IT portals and events and those of our partners.
If you would like to participate, please provide us with details of your website/s and event/s or your organization and please include basic audience demographics as well as relevant metrics such as ave. page views per month.
To get involved, email Marilyn Moux at marilyn@sys-con.com.
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The World's Most Influential Blogs By Denise Dubie  Imagine if you could take a time machine five years into the future, so that you would know which of today’s new technologies panned out and which did not.
Most companies have only started using cloud in the past two years. But there are some companies that have been using cloud for five years or... May. 23, 2013 06:15 AM EDT Reads: 422 | By Dirk Zwart “The last time I checked, people do not change their social security numbers very often...”
While in constant debate over data encryption and ease of access, I encountered a train of thought that made my jaw drop. A tradeshow attendee suggested encrypting everything, but just use a weak algorithm; ... May. 22, 2013 11:20 AM EDT Reads: 512 | By Lori MacVittie  Don and I have four children, all of whom have had the fortune to take piano lessons (I'm not sure if the youngest would agree he's fortunate at this point in his life but at five, he's not really able to answer the question with any degree of wisdom, anyway. Come to think of it, not sure the other ... May. 22, 2013 09:00 AM EDT Reads: 395 | By Nicos Vekiarides  Our prior post, A Roadmap to High-Value Cloud Infrastructure: Disaster Recovery and Data Protection, discussed both the benefits and limitations of a cloud-based disaster recovery (DR) strategy. As we highlighted last week, traditional disaster recovery options leave open a huge hole: At one extreme... May. 22, 2013 08:45 AM EDT Reads: 632 | By David Deans  Online collaboration has evolved during the last decade, delivering even greater value -- thanks to a new generation of business technology applications. Forbes Insights released "Collaborating in the Cloud," a Cisco-sponsored study examining the ways business leaders increasingly look at cloud coll... May. 21, 2013 08:45 AM EDT Reads: 929 | By Mark van Rijmenam  New technologies allow schools, colleges and universities to analyze absolutely everything that happens. From student behavior, testing results, career development of students as well as educational needs based on changing societies. A lot of this data has already been stored and is used for statist... May. 19, 2013 02:00 PM EDT Reads: 1,928 | By Kevin Nikkhoo  A recent Gartner study states that the function of the modern CIO is in flux and that his or her future focus must incorporate digital assets (aka cloud-based data and applications) to remain relevant. Towards the goal of riding the sea change a compiler of stacks to a broker of business needs, secu... May. 19, 2013 09:00 AM EDT Reads: 1,331 | By Mark van Rijmenam  In the coming years, big data will change the way organisations and societies are operated and managed. Big data however, is not the only trend that will impact significantly how organisations operate. Another major trend at the moment is gamification. Gamification will change the way organisations ... May. 19, 2013 08:00 AM EDT Reads: 1,757 | By Gathering Clouds  We all talk about cloud differently, but is there a way we should be speaking about this tech?
Cloud computing is now a widely reported, if not accepted, IT movement that, depending on who you talk to, has changed or is changing the way businesses utilize infrastructure. May. 18, 2013 02:00 PM EDT Reads: 1,500 | By David Tishgart  I'd like to address a recent blog post in CloudTweaks titled, "Cloudera Not Cutting It With Big Data Security." The author makes a number of very salient and valid points about Hadoop security… or lack thereof.
Indeed the Apache Hadoop platform, which includes HDFS and MapReduce and other projects ... May. 17, 2013 09:45 AM EDT Reads: 1,607 |
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Pereyra
Oracle |
Ryan
OpSource |
Butte
PwC |
Leone
Oracle |
Riley
AWS |
Varia
AWS |
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Oracle |
O'Connor
AppZero |
Crandell
RightScale |
Nucci
Dell Boomi |
Hillier
CiRBA |
Morrison
Layer 7 Tech |
Robbins
NYT |
Schwarz
Oracle |
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