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Wow has it been a whirlwind over the last ten years in the virtualization space. Where once Xen and then KVM sat on the pedestal, the baton has been passed to the projects revolved around containers. Names like Docker, Kubernetes and Mesos are most often mentioned. As is generally the case in the FLOSS arena, evolution is a constant. Therefore, if one is in the DevOps arena, it is time to familiarize yourself with containers if you have not already done so.

First of all, let's examine the virtual machine space. VMware, the elephant in the room, still commands a lot of attention. After all, it is a publicly traded company with billions in revenue. A lot of companies utilize VMware for its virtualization needs, and the numbers bear that out. Essentially, it is still the leader in the clubhouse. But, its lead is not what it once was. Over the 15 months examined, whether it is VMware, ESX/ESXi or vSphere, all have been on the decline. Each of those keywords within the listings has seen a 20-30% slide. And, more concerning is the fact that they have been falling at a fairly even pace.

In an ever-changing world, the data surrounding relational and non-relational databases is no different. While there are proponents for both, it seems to be a case by case basis for which is best for a particular environment. And, with the pace of innovation, the answer can be swayed on a frequent basis. With all that being said, the numbers don't lie, and there is evidence of a shift that is occurring.

While most of the stalwart SQL related databases (MSSQL, Oracle RDBMS, DB2, etc.) remain stagnant, there has been a decline in interest for MySQL. Might seem surprising given the fact that one of the core components of the original LAMP stack is losing ground. How could that be the case? In essence, a lot has changed since it came into prominence. Most importantly, in my opinion, is that it was purchased by Oracle. No longer an independent entity, you have one company controlling two prominent database choices. Is it possible for Oracle to be unbiased and treat each on its own merits? Perhaps. Only the folks inside the company know the true answer to that. Whatever the answer may be, it goes without question that the momentum that MySQL once had has been subdued.

While the overall numbers are not necessarily sexy, the percentage growth surely is. If you are looking for a tool to search and analyze data, Elastic stack and Splunk are showing exponential gains in the last couple of years. Therefore, if you are currently a DevOps engineer or looking to take your career in that direction, it is essential that you familiarize yourself with the Elastic stack or Splunk.

In order to analyze the Elastic stack, we broke it down into its main three components: Elasticsearch, Logstash, and Kibana. While all three separately have grown over 40% over the course of the last year, it is essential to put the trio together to get the full extent of their growth trajectory. In that case, we have seen a growth rate that has exceeded 150% since the latter part of 2015. Truly remarkable.

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