...
There can only be one Master Controller running at a time and is a single point of failure. This can only be avoided by deploying a dual MC system. Probably starting with Delft-FEWS 2022.02 multiple Master Controllers can be run on one database.
As a result of this, the Master Controller cannot be scaled horizontally. Since the Master Controller is a single point of failure, it is important to monitor the health of the Master Controller.
Scaling the Master Controller vertically can be done by redeploying the Master Controller.
...