'Everything about Blue Green Deployment Strategy!' devops devopssecurity
Back in 2005, two developers named - Daniel Terhorst-North and Jez Humble were tackling issues with their Ecommerce Website. They were disappointed with the fact that even with a good testing system, the errors are still being detected at much later stages of production. Following this, they performed a detailed root cause analysis, the results of which showed a significant difference in the conditions of testing and production environment, and these differences resulted in frequent failures.
If a load balancer and router are used, for switching traffic between two instances, there will be absolutely no requirement to change the DNS records, the load balancer will point to the same DNS records, but the traffic is now routed to the green environment. As compared to Canary Deployment, a small piece of the production environment is used, and a tiny amount of traffic is routed to test the update. Though it’s a profitable approach, with limited conditions impacted on the new update, we cannot establish the complete picture of the update when it’s finally deployed and made accessible to everyone.
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