What's the distinction between a blue/green deployment and a rolling deployment?
In Blue-Green Deployment, you have TWO complete situations. One is a Blue condition which is running and the Green condition to which you need to overhaul. When you swap the environment from blue to green, the traffic is coordinated to your new green condition. You can erase or spare your old blue condition for reinforcement until the green condition is steady.
In Rolling Deployment, you have just ONE complete condition. The code is conveyed in the subset of occasions of a similar situation and moves to another subset after culmination.