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We’re Headed Toward Universal Elasticity as a Service
By: John ShepplerWe've all experienced the frustration of visiting a normally functioning website only to find that it's slow or completely blocked. Maybe you're trying to finish a project on Friday at 5 PM and your cloud service is down. Perhaps the video you watch repeatedly beats, causing your blood pressure to rise to unacceptable levels. Why is this not working?
hungry for wealthIf a normally functioning system fails without hesitation, it is due to a malfunction or lack of resources. Sometimes there is a hardware failure. Bugs are software that wanders in more unexpected paths or gets stuck in a loop. There is a high probability that the resource is scarce.
If you want something more than what you have now, you will run out of resources. This can be compute cycles, RAM memory, storage space, or bandwidth. If the problem is caused by an unusual need for additional services, you may lose it all.
How did it happen? Imagine an e-commerce site large enough to handle the volume of casual shoppers and peak time margins. A major TV station broadcasts stories about products that are popular on social media. Suddenly everyone in the world seems to be looking for this article and many have found your page. Traffic? Through the roof! Sale? Not so much anymore. You are a victim of a shortage of resources.
But my service is scalable!
Of course they are. All you have to do is expect someone to notice an increase in activity. You notify another manager who will investigate the situation and take steps to allocate additional resources. In most cases, this is done by changing the settings on the control panel or by contacting the service provider. After a few minutes or hours the jam goes away and if you want to order something else you can do it without any problem. But... how many buyers go and find another seller?
Another downside of scalable capacity is that you can pay for unused capacity once the traffic jam is cleared. To reduce the cost of your IT and network services, you must carefully match resources to demand.
Elasticity acts faster than stretch
Think of elasticity as automation. Elastic resources are automatically adjusted to the needs without human intervention. Yes, robots have come to our job, and if so, welcome to this crazy task.
Elastic cloud computing allows the cloud to allocate virtual servers and storage as needed. You can't really do that if you have your own server that has to be ordered, delivered, packaged, and interacted with the rest of the infrastructure. Oh, it's always been that way. It is not visible to you. Now cloud companies handle the installation of dozens or even hundreds of physical servers at once. Hypervisor software can be broken down and cut into virtual machines that can be provided to any user at any time and faster than necessary.
Another beauty of elastic calculations is that they can be quickly removed as resources are added. The system automatically monitors traffic requests, so you have only what you need. It also means you only pay for what you use. A good cloud service can be seen as an endless resource that you can consult and use when needed.
Elastic band completes the system
There's no point in having a supercomputer in the back room when all you have is a 1.5Mbps T1 line. This is also the elastic bandwidth you need to complete your elasticity calculations. Software monitoring and billing makes this a realistic prospect. Your cloud provider may have several Tbps or Pbps of fiber bandwidth connected directly to the internet core. After all, you don't have to pay for it. Your computing resources can be billed based on the average bandwidth they use per hour.
Software-defined networks now virtualize bandwidth, just like virtual cloud servers. This feature increases the bandwidth usage associated with your company location. With elasticity, your lines won't get stuck or waste a lot of money on unused capacity.
Large capacity MPLS networks have been offering this type of elasticity for many years. You pay for limited bandwidth but can increase your traffic for a short time.
Fast scaling is now the norm for fiber internet and point-to-point bandwidth services. Bandwidth will soon become the norm and we will forget the days when you were never sure whether you ordered enough bandwidth or ordered too much.
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