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PCF - Blue Green Deployment


BLUE GREEN DEPLOYMENT PCF
Blue-Green deployment is a technique to reduce the downtime of applications during deployment and also reduce the risk ie. if something unexpected happens we have an option to roll back to the previous version by switching back


There are two identical production environments running called Blue(live) and Green(idle) and at any time only one of the environments is live. 


When a new version of the app/software needs to be deployed, final stage of testing happens in the green environment and once it is fully tested, we can switch the router so all incoming requests now go to Green instead of blue. Green is now live and Blue is idle.


Blue green

For more details, please refer pivotal resource link - 

https://docs.pivotal.io/pivotalcf/2-5/devguide/deploy-apps/blue-green.html
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