A Replica Set is a collection of features that are part of the Micro Cloud. Making the feature a Replica Set feature and placing it in the Micro Cloud enables collaboration, scalability & resiliency. Each Replica Set feature has an attribute called Replication Factor that can be set in the properties panel or in the Feature Manifest in the Feature Studio. For example, if the Replication Factor is set to 3, then there will be 3 instances of the feature running in the Node Group.
- Collaboration: We put features into the Replica Set when we want the features to be able to collaborate across a number of nodes. For example, if data from the nodes in a node group flows into the Micro Cloud, then the Replica Set features can operate on data collected across all of those nodes. This allows analytics to run across an event horizon spanning all the data collected by all the nodes.
- Resiliency: The Micro Cloud will control the Replica Set features by making sure there are always a number of nodes running the software. If one node fails and an instance of the Replica Set feature is lost, then the Micro Cloud will spawn another instance of that feature on another node.
- Scalability: The Micro Cloud can increase the number of nodes running instances of the Replica Set features to support increased processing requirements.
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