27 April 2012

Cloud Foundry Bridges the Clouds

In this episode of the Uhuru podcast, Dekel Tankel, a Cloud Foundry marketing manager at VMware, explains how one of the things that interested him most about Cloud Foundry was it’s ability to cross the chasm between clouds, allowing customers to easily move their applications between cloud service providers. To Dekel Cloud Foundry is all about giving more choices to developers without locking people into a particular service or technology.
Developers can start with the Cloud Foundry micro-cloud as they build their app prototypes, running locally on a laptop, and then deploy to a cloud service when their code has matured. No other cloud service offers this degree of flexibility ranging from the private to public clouds.
At times the enthusiasm for Cloud Foundry is daunting to Dekel (they had 10,000 developers register in the first 72 hours of launch) and the volume of Open Source contributions is hard to keep up with. It would be easier to control and contain the progress of Cloud Foundry if it had been closed and followed a proprietary architecture, but it’s all been worth it.
You can follow the Cloud Foundry blog here:
http://blog.cloudfoundry.com/
You can register for your own free Cloud Foundry account here (use the word “cloudtoday” for the promotion code for immediate approval):
http://www.cloudfoundry.com/
Of course, you can also register for a free account on the Uhuru PaaS, which is based on Cloud Foundry and offers extra enhancements like support for .NET applications.


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25 April 2012

Taking .NET to the cloud is a process

In this episode of the Uhuru podcast show Michael Collier, an architect at Neudesic, shares his experiences in bringing .NET applications to the Azure Platform as a Service (PaaS). Michael explains how migrating existing .NET apps to a PaaS is a process. Managers have to be educated about the cloud so they feel comfortable using it. He has often had to rewrite parts of the .NET apps to make them compatible with the Azure PaaS. The migration process is different for each app, depending on how it was built. .NET apps that follow best practices can run on a PaaS with almost no changes at all (e.g. not storing state on the server, etc). Other apps can be much more difficult to migrate (e.g. using COM, relying on server state, etc).
In the end, the migration to the cloud is well worth it. Developers can focus on what they love doing: writing great apps!
You can find Michael’s blog here:
http://michaelcollier.wordpress.com/


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17 April 2012

The Stateless App

In this episode of the Uhuru podcast Andy Piper, a Cloud Foundry developer advocate at VMware, talks about how to build great apps for the cloud. In his work with developers Andy has found that stateless apps are the easiest to transition to cloud platforms such as Cloud Foundry. Looking for particular files or settings on a server prevents your apps from being able to benefit from the automatic deployment scaling or redundancy features of new hosted Platforms of a Service. Luckily, many apps are ready to run on a PaaS already. At recent hackathons Andy has that many of the existing apps deployed on Cloud Foundry without any changes at all.
You can read more about Andy’s advice for building apps in the cloud on his blog:
http://andypiper.co.uk/


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13 April 2012

When The PaaS Isn’t Enough

In this episode of the Uhuru podcast Andrey Cherkasin tells about his decision to abandon a Platform as a Service and move to a custom hosting solution. Andrey was an early adopter of the Cloud Foundry PaaS technology, and was thrilled with being able to setup his own private PaaS. Unfortunately, Andrey’s needs for support of numerous Ruby platforms made it impractical for his needs. He now relies on a custom cloud solution using Chef Scripts and a smart OS.
You can follow Andrey on his blog:
http://andoriyu.bestpersons.ru/


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12 April 2012

The Long Path To The Cloud

In this episode of the Uhuru podcast Jason Nappi, a software developer with SmartPak, talks about the journey he has been on to move his .NET application to the cloud. Everything is now running in virtualized instances that can be easily replicated to handle additional load, but the monolithic database model used by his software doesn’t lend itself well to most cloud platforms. It would be nice to utilize the scalability possible on Azure, but that just won’t be possible without re-architecting the database. Jason is closely watching technologies like database auto-sharding to find ways to further improve the performance of his apps in the cloud.
You can read more about Jason’s ideas and trials on the cloud at his blog:
http://blog.nappisite.com/


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07 April 2012

Gimme That PaaS Source Code!

In this episode of the Uhuru podcast show Krum Bakalsky, a software engineer, shares his passion of participating in Open Source projects. In particular, VMware’s decision to place Cloud Foundry into Open Source has inspired Krum to become a significant contributor to the community effort. The Cloud Foundry community has been the perfect place for Krum to learn about the guts of building enterprise class software and to gain real experience as a participant. The fragmented nature of the Open Source world can be frustrating at times, such as when Krum discovered other programmers had already been working on something he was doing, but the collaborative environment more than makes up for these deficiencies.
You can read about Krum’s Open Source exploits and ideas on his blog:


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04 April 2012

Medical Imaging In the Cloud – Just a Matter of Time

In this episode of the Uhuru podcast Dr Victor Fang, a research scientist with Riverain Technology, talks about how the medical industry is well on its path to moving IT to the cloud. While medical diagnostic images (like x-rays and MRIs) are still stored locally today, most companies are looking at ways of putting them in the cloud. It has just taken a while for cloud services to reach the level of security and privacy needed to comply with government regulations. At conferences Dr Fang has attended recently he has noticed the explosion in businesses offering cloud hosting, which is just one indicator of where the medical industry is moving. Dr Fang also couldn’t help but notice that hospitals where he’s worked are typically behind in adopting stateless web applications, relying primarily on traditional Windows-based client/server solutions that are harder to move to the cloud.
The health care industry can move slowly at times, but it makes huge waves when it does move, and the cloud is just around the corner.
You can follow Dr Fang on his web site.
http://www.victorfang.com/


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30 March 2012

Everyone Needs a Cloud – Even If They Don’t Think They Do

In this Uhuru podcast episode Jonathan Schnittger, a senior developer atiQuate, talks about even companies where cloud computing doesn’t make sense for their own products can still benefit from back-office cloud services like e-mail, file sharing, etc. Jonathan’s company creates security scanning software that has to be run on local networks which precludes cloud hosting. Many of his customers are using cloud services like Amazon. Even the large enterprises he works with are hosting more and more of their applications on the cloud. Desktop replacement with cloud services is another hot area Jonathan sees organizations adopting, but the solutions for this are still immature.
You can follow Jonathan on Twitter:


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Pioneer Of The PaaS

In this Uhuru podcast episode Wely Lau, a software architect at NCS Private Ltd, talks about his pioneering work with the Azure Platform as a Service (PaaS). He was using Azure as an early tester even before it was released! There have been growing pains along the way, but today Wely is building complex applications on Azure that save his customers loads of money. He describes one fascinating project where he reduced the time to process thousands of records to prioritize work for a shipping company from over 4 hours to 2 minutes by dynamically spinning up additional application instances as needed. This is the dream of the cloud – pay for what you need, when you need it, rather than having large sunk costs in systems that are only used on a periodic basis. Wely is also closely following other PaaS services such as Amazon’s new Beanstalk, and now the Uhuru AppCloud (of course!).
You can follow Wely on his blog:
http://wely-lau.net/


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28 March 2012

PaaS Requires a New Set of Skills

In this episode of the Uhuru podcast Imran Ahmad, President of Cloudanum, tells about his experience helping major organizations roll out cloud computing projects. The new Platform as a Service space solves a lot of the cloud management issues Imran’s customers face, but it takes a new skillset and way of thinking of the cloud. Many of Imran’s clients are exploring Platforms as a Service (PaaS) but not one has rolled out a production service yet. Too many PaaSes require changes in how apps are written to be immediately applicable to existing applications.
I will just have to get Imran to try to Uhuru PaaS to see how it IS possible for apps to be deployed on the cloud without re-architecting.
You can read more of Imran’s ideas on his blog:


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Testimony of a cloud convert

In this episode of the Uhuru podcast show Tim Genge, a senior software architect at RealmSoft, talks about his recent conversion to the cloud. Cloud computing used to be nothing more than marketing double-speak as far as Tim was concerned. Now that he is running his own business and working with customers in the banking sector he “gets” it. Yes, many aspects of the cloud are similar to traditional client/server software models but the way in which people use it to transform their businesses is truly impressive.
Tim has been looking seriously at Azure as a platform for his software, but he needs it to run on a private networks as well since his customers won’t trust everything to the public internet. Tim also has a client-side component to his software which makes it difficult to find the perfect cloud solution since no one seems to focus on that area.
As an addendum to the interview, I should point out that after the discussion we clarified that Azure does NOT, in fact, have a local version that Tim’s customers can run on their local networks. Tim says he is going to investigate the Uhuru PaaS as an alternative .NET PaaS (which just happens to run in private networks just fine).


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27 March 2012

Software testing moves to the cloud

In this episode of the Uhuru podcast show Feza Pamir, the VP of Marketing at QASymphony, explains how his company uses the cloud to offer their own cloud service, to help software test teams manage bugs and the entire quality assurance process. QASymphony currently uses Amazon virtual machines for hosting their service but support local deployments on private networks and are looking at other service providers that might have different levels of security that would allow them to meet varying customer needs.
Feza makes it clear that choice in cloud hosting is critical because his customers have such different needs – even private clouds have a role to play since there are still situations where organizations need to keep data on their own network.
While platforms as a service, like Uhuru, are an interesting hosting option to Feza the technology his company has built has such a degree of low-level customizations that they need the greater control of configuring the operating system to their needs. If he had to do it all over again it would be nice to build the QASymphony applications in a way that would make them more compatible with PaaSes.


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The database hitman tries the PaaS

In this episode of the Uhuru podcast show Anil Mahadev, a Principal Software Consultant aka DB2Hitman, shares his experience of working with the Uhuru PaaS. He was amazed with how quickly he was able to deploy a .NET app. Moreover, it was easy for him to configure his application to work with the Microsoft SQL Server service by following a few steps. By contrast, it took Anil a lot longer to get off the ground and running with Azure.
No question about it, Anil feels that the Uhuru PaaS is great for developers and test engineers. The big question is whether IT is ready to go the way of the PaaS.
You can listen to the entire interview here.


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25 March 2012

The health of the cloud

In this episode of the Uhuru podcast Terry Montgomery, a Project Manager at Health Roster, talks about his experience with managing IT projects in the cloud. According to Terry, the medical industry may be slow to adopt new technologies but the value of cloud computing is so compelling that they are moving fast. Amazingly, it is the small operations like physician offices which are leading in cloud adoption with products like practice fusion. Hospitals and large health-care organizations are dipping their toes into cloud computing with virtualization of their private data centers. Compliance issues, and HIPPA, may have created some initial caution with cloud adoption in health-care, but Terry sees that these issues are being addressed and that the industry is ripe for the cloud now.

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22 March 2012

The Virtual Machine perspective

In this episode of the Uhuru podcast show, Shalin Jirawla (a software engineering student) shares his thoughts about cloud computing. He talks about his interest in using the cloud for real-time computing applications. While Platforms as a Service are interesting to Shalin he feels that complete access to virtual machines is necessary for most of the things he wants to do for now. His experiments with Microsoft’s Azure haven’t been overwhelming.
That’s the kind of challenge Uhuru loves! Let’s just see if the Uhuru PaaS can’t help Shalin with his work…
Here is the full recording of the interview.


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21 March 2012

The next step of the cloud – making the office virtual

In this episode of the Uhuru podcast show Ben Yehooda (the CEO ofLevaman) talks about how his company is building cloud services to make the virtual office of the future a reality today. Just as the cloud has made it possible for companies to avoid having to build their own physical IT infrastructure, Ben is working hard to eliminate the need for physical infrastructure too.
Why can’t employees just work together remotely from wherever they are? Why invest in expensive office space? Ben explains why he thinks tools like Skype and Office 365 are limited in their abilities to re-create the vibrant office environments with serendipitous conversations and sharing of information.
Levaman practices what they preach. Their employees are scattered around the world and they have never owned a physical server.
You can hear ben talk about his vision of the cloud and virtual offices here:


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13 March 2012

VMware’s walk on the wild side – Cloud Foundry and Open Source

In this episode of the Uhuru podcast Dave McCrory and Patrick Chanezon, both senior staff at VMware, explain how the decision to introduce the Cloud Foundry Platform as a Service (PaaS) as an Open Source project has helped far more than its hurt. Dave and Patrick talk about how they had the first community bug fix pull requests within the first day of releasing Cloud Foundry to the Open Source community. After a year in the Open Source realm they feel Cloud Foundry has matured far quicker than it ever could have otherwise.
There is a certain logic here. For a technology like a PaaS aimed squarely at developers, sharing the source code and engaging the very people intended to use the service can lead to a lot of great benefits.
Still, it can be a little frightening to see the community take your life’s labours in directions you may not have intended, or dreamed, as the example Dave and Patrick site of Smalltalk support being added to Cloud Foundry illustrates, not to mention .NET support and other sundry enhancements that companies like Uhuru have added.
You can listen to the entire podcast here:

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Outsourcing Bad Idea No 16: A Gun To The Head.

In this Practical Software show, SEP group member Venkatesh Potdar, a Project Manager at Adtran, talks about how important it is to build a partnership with outsourcing teams. He points out that you can’t just throw things over the wall and expect success. This kind of collaboration requires trust and respect and simply won’t work with a gun to the head mentality, treating the outsource team like laborers to whom you can just issue demands.

Venkatesh also explains why it is sometimes better to just go the whole way to actually set up a permanent office abroad to hire your off-shore team as direct employees. If you are going to be making a long term commitment to a team that is sufficiently large anyway, then why not just bring them on as actual members of your company?

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12 February 2012

Taught v. Learned

Teachers often commiserate with one another over how little of their lessons are actually retained by the students. The standard defense is that the material was taught, but that students are too fickle to remember or at least admit to have remembered it. Teaching cycles often look something like this: assign reading, complete worksheet, discuss in class, distribute study guide, review, test, repeat. Perhaps most perplexing of all is the fact that students often perform well on assessments and then promptly seem to forget what they learned.

The problem lies partially in our natural tendency to forget some of what we learn, but perhaps more importantly in the difference between teaching and learning. Most lessons are not meaningful to the students, leading them to focus on isolating what they need to memorize to maximize their grade and then moving on. In short, the teachers teach what they think is important for students to know and the students, finding the material largely irrelevant, develop short-term cramming skills to perform well on the predictable assessments and then promptly forget the material.

As written tests are the most common way of verifying what students learned, teachers can point to strong test results and claim that they successfully taught the material, exonerating themselves from any subsequent student “forgetfulness.” From the student’s perspective, it becomes increasingly tempting to adopt an attitude of cynicism toward the boring, meaningless process. Inasmuch as students find their classes irrelevant, school becomes a mind-numbing process of going through the motions in order to get a grade. Copying worksheet answers, cheating on tests or gaming the system appear increasingly legitimate if the process is pointless to start with.

Modern teaching techniques, often involving group work, differentiated instruction and technology, attempt to address this divide between teaching and learning by making education more interactive, and thus more engaging. Given that students are bombarded with stimuli from various electronic sources and socializing all day long, the theory is that schools have to compete for their attention by using similar techniques. Unfortunately, such theories reduce students to animals whose attention can only be secured by flashy graphics on screens and social interaction. Intellectual engagement largely ignored, and the academic engagement resulting from these "21st Century Methods" continues to fare poorly against "19th Century Methods."

Ultimately, successful student engagement involves respecting the students as individuals and as thinkers. It requires the teacher to create an environment where students discover how the world works experientially, and appreciate the relevance of what they are studying. The definition of a master teacher is whether he can create such a learning environment. It can be done with or without modern technology; the more technology is used, the more additional skill the teacher requires to ensure that the technology contributes to rather than distracts from the focus of the learning.

Evidence of this basic principle is not hard to find. Master teachers like Rafe Esquith manage to effectively and consistently engage large, public school 5th grade classes, despite minimal resources and considerable bureaucratic obstacles. Meanwhile, many private "21st Century" classrooms and schools, boasting small class sizes, minimal bureaucracy, teaching assistants, diversified teaching styles and the latest technology achieve considerably less student engagement and meaningful learning.

There are some tangible steps which teachers can take to ensure that learning is happening. First, never waste the students' time and intelligence. Start classes on time, dispense with busywork assignments like crossword puzzles and mindless worksheets. Beware of excessive use of workbooks and mindless assignments like coloring maps.

Second, encourage integration of new concepts into existing knowledge. Start with what students know and create scenarios where students have to discover concepts by actively solving real problems rather than by passively listening to lectures or viewing media. A textbook example of this is Jane Elliott's Blue Eyes/Brown Eyes Exercise. It is difficult to imagine a more effective way to teach the concept of racism.

Third, find innovative assessment methods that allow students to apply their ingenuity and understanding to new problems, without creating the free-rider incentives endemic to most group projects. Factual regurgitation should never be the center of assessment. Instead, have them apply what they learned in meaningful ways, like these simulated WWII letters to investigate the plight of the Japanese both in Japan and in the USA. Beyond assessing understanding, assessments can also help students to develop presentation skills appropriate to their chosen medium. Perhaps the most misunderstood medium is PowerPoint, which few teachers know how to effectively use themselves.

Finally, listen to the students by checking in regularly, both through formal surveys and informal discussion. Students are usually honest, sometimes to a fault, about how things are going. By including their feedback in the directions of the class, they are respected and validated as individuals. In a balanced class, they inevitably teach the teacher as much as they learn from him.

15 January 2012

Solving Education Locally

I am a Middle School History teacher of 9 years and still love my profession. When I started teaching, I had a dream of creating the ideal curriculum and then simply propagating it around the world to overhaul education. My first few years teaching were in a private school which tried to do exactly this. Although the educational level was much higher than public schools, I became imminently aware that the core of quality education is not having the best curriculum, but having the best teachers. Curriculum is decidedly easier to replicate than great teachers.

I still do not understand how any teacher or parent (and I am both) who understands that the most important factor in education is the teacher in the classroom would ever seek centralized solutions, as such solutions can never ensure that each classroom has a great teacher in it who is empowered to make the best decisions for his classroom. Political solutions, by definition, are centralized solutions to a localized problem. It does not matter whether the centralized solutions come from government or teachers unions, they cannot ensure quality in each local classroom.

The only viable solution, in my opinion, places the control of the classroom firmly in the teacher's hands. It is the New Zealand solution of some years back: localize the funding and the decisions in each school in the hands of the parents/teachers. In other words, the principal and teachers of each school should be solely answerable to the parents of their students, with no tenure.

This could be achieved through the complete privatization of education, but that would be unpopular. It can also be achieved by school choice whereby each school receives a certain amount per student who attends and then parents can vote with their feet if they are unhappy. Unfortunately, this option is unpopular with teachers, who often don't trust parents to make sound educational choices. From my experience, parents VERY consistently request for their child to be in the classes of the most competent teachers. The other common problem with vouchers and school choice is that the governments start attaching curricular and testing requirements to the funding, invalidating the purpose of local decision-making.

Politicians will never favor the privatization or localization of education because that would remove it from their influence. They want to find central solutions to all of our problems, whereby they are the heroes who save us and are subsequently rewarded by re-election. Their "solutions" generally involve centralizing decisions even more, which is always detrimental to education.

I have travelled all over the world observing great teachers, both public and private. In spite of the problems with our current system, I have observed public, inner city, American school teachers like Rafe Esquith, who manage to minimize the negative impacts of standardized testing and poor curricula on their activities in the classroom. His 5th grade students' scores on standardized tests are high because his students are learning what they ought to in his own self-designed curriculum, not because he focuses centrally on testing.

Finally, I find that the "Finland Phenomenon" is possible in each classroom without fixing the entire educational system. Yes, there are horrible schools where teachers may be restricted from the freedom of achieving this in their classroom, but quality teachers should not stay in such schools. I have decided to create a "Finland Phenomenon" in my classroom and am impressed by how much control I have to independently make a difference and motivate students by creating the right environment.

Let us lobby for localization of educational decision-making while doing our best to create our ideal learning environment in our own classroom.