Orchestrators provide another great feature. If my application is prepared to run more than one instance of some components, the orchestrator will help us easily manage this replication. This is easy because components are based on containers, so if we need to run more than one replica of a component, we can ask the orchestrator to execute more containers. In fact, this feature is key because, in orchestration, we define an application component with the number of required healthy replicas. If all required replicas are alive, that application component will be healthy. If one replica dies, a new one will be executed to ensure that the required number is accomplished.
The management of replicas is one of the features provided by orchestrators. If application performance is compromised and application logic allows replication, we will be able to scale up or down the number of replicas or instances of a component.
On the other hand, we learned...
