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VMworld EU 2015 Buzz: Should I be Transitioning my Legacy Applications into CNA? – CNA6813-QT

October 27th, 2015

Adding some more colour to the highlights from my VMworld Europe 2015 coverage:

Session was led by Chris Crafford, a Practice Manager, VMware

This again was a high level overview of the technologies available and went through what microservice are, the 12 factor apps I mentioned in the lab I did and why they are better for cloud environments. Microservices only manage the data they care about, are accessed only via the service, there are no shared libraries.

Chris mentioned an interesting thing I hadn’t thought of for the definition. Microservices need to be automatically deployed to make them true microservices, its not good enough to just have services that are micro.

Chris went through one of the major tenets of microservices which is all about failure management, assume failure and have an architecture that mitigates the impact of the faults, errors and failures at runtime.

Then Chris went on to talk about migrating legacy applications which must be done as an evolutionary approach. Choose the most business urgent to break out first. Use containers for this new bit and leverage best practices for CI/CD, automating all the steps. Learn and improve and then repeat for the next service that has been prioritised.

Another thing Chris mentioned was some deployments use one microservice per container but this makes management more challenging so consider a business role mapped to a container model instead.

The short session ended with a vCloud Air commercial, VMware funnily enough says it is the ideal target for migration of legacy applications particularly with the recent announcements with layer 2 networking between your data center and vCloud Air and container security with NSX.

The future of vCloud Air and how it will integrate with EMCs recent aquisition of Virtustream now becomes very interesting as vCloud Air is being moved out of VMware direct management and folded directly into Virtustream. Who knows what the future holds.

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