SQL seems to be somewhat old fashioned when it comes to scalable databases in
the cloud. Non-relational databases (also called NoSQL) seem to take over in
most data storage fields. But why do those databases seem to be more popular
than the "classic" relational databases? Is it due to the fact that
professors at universities "tortured" us with relational databases and
therefore reduced our interest - the interest of the "new" generation for
relational databases? Or are there some hard facts that tell us why
relational databases are somewhat out of date?
I was at a user group meeting in Austria, Vienna, one month ago where I
talked about NoSQL databases. The topic seemed to be of interest to a lot of
people. However, we sat together for about four hours (my talk was planned
for one hour only) discussing NoSQL versus SQL. I decided to summarize some
of the ideas in a... (more)
I've done a Windows Azure Series together with Mario Szpusta, Software
Architect Evangelist at Microsoft Austria on Windows Azure. The Series is in
German and I decided to bring it to Cloud Computing Journal. I will modify
some of the articles to bring them up-to-date. This series will cover about
15 articles that will be published once a week.
What Is Windows Azure?
Windows Azure is Microsoft's Platform as a Service offering for Cloud
Computing. There are three major fields in Windows Azure. Figure 1 provides
an overview of the platform.
The three fields are Windows A... (more)
To understand Windows Azure and the Azure Services Platform, it's necessary
to understand how the Microsoft Datacenters work. This article provides an
overview of how Microsoft Designs their datacenters and why the Generation 4
Datacenters are so revolutionary.
The Building of Datacenters
Microsoft has been building data centers for a long time. One of the
best-known services Microsoft offers is Windows Update, which delivers
updates as part of their content delivery network all over the world. But
this is not the only product Microsoft's Datacenters are famous for. Other
Windows Azure, a Platform as a Service offer, is Microsoft's cloud computing
platform. It was announced at PDC 2008 where Microsoft announced some
interesting improvements and additional features to its Windows Azure
Platform. Microsoft is serious about its strategy on Windows Azure, as was
demonstrated in the PDC keynote, which dedicated over one hour to Azure. But
what exactly is Microsoft's cloud computing strategy? This article describes
the new features that will be available soon on Windows Azure.
Windows Azure VM Role
A very interesting announcement was the VM Role for Wind... (more)
Infrastructure as a Service and Platform as a Service offer us easy scaling
of services. However, scaling is not as easy as it seems to be in the Cloud.
If your software architecture isn't done right, your services and
applications might not scale as expected, even if you add new instances. As
for most distributed systems, there are a couple of guidelines you should
consider. I have summed up the ones I use most often for designing
Design for Failure
As Moore stated, everything that can fail, will fail. So it is very clear
that a distributed system will fail... (more)