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Data Center Feng Shui: Reliability is not the Absence of Failure

But rather it is the ability to compensate for it. Redundancy. It’s standard operating procedure for everyone who deals with technology – even consumers. Within IT we’re a bit more stringent about how much redundancy we build into the data... Read more
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Sessions, Sessions Everywhere

If you’re replicating session state across application servers you probably need to rethink your strategy. There’s other options – more efficient options – than wasting RAM and, ultimately, money.   Although the discussion of Oracle’s... Read more
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Data Center Feng Shui: Normalizing Phased Deployment with Virtualized Network Appliances

Normalizing deployment environments from dev through production can eliminate issues earlier in the application lifecycle, speed time to market, and gives devops the means by which their emerging discipline can mature with less risk. One of the... Read more
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Data Center Feng Shui: SSL

Like most architectural decisions the choice between hardware and virtual server are not mutually exclusive. The argument goes a little something like this: The increases in raw compute power available in general purpose hardware eliminates the... Read more
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Data Center Feng Shui: Fault Tolerance and Fault Isolation

Like most architectural decisions the two goals do not require mutually exclusive decisions.  The difference between fault isolation and fault tolerance is not necessarily intuitive. The differences, though subtle, are profound and have a... Read more
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Data Center Feng Shui

The right form-factor in the right location at the right-time will maximize the benefits associated with cloud computing and virtualization. Feng Shui, simply defined, is the art of knowing where to place things to maximize benefits. There are... Read more
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F5 Friday: The Rules for the Game of Application Performance Tag

It’s an integration thing. One of the advantages of deploying an application delivery controller (ADC) instead of a regular old Load balancer is that it is programmable – or at least it is if it’s an F5 BIG-IP. That means you have some measure... Read more
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Architectural Multi-tenancy

Almost every definition of cloud, amongst the myriad definitions that exist, include the notion of multi-tenancy, a.k.a. the ability to isolate customer-specific traffic, data, and configuration of resources using the same software and interfaces.... Read more
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The Goldfish Effect

When you combine virtualization with auto-scaling without implementing proper controls you run the risk of scaling yourself silly or worse – broke. You virtualized your applications. You set up an architecture that supports auto-scaling... Read more
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Square Infrastructure Pegs Don’t Fit in Round Network Holes

Ultimately a highly-scalable, high-performance architecture will rely on choosing the right form factor in the right places at the right time. Scale is not just about servers, and for corporate data centers and cloud computing providers looking... Read more
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