[Query] Jdiameter - HA Cluster Feature

[preetirani07]

Hello all,
What kind of functionality does Jdiameter HA Cluster provide? Is it?
a. Multiple instances of Jdiameter Stack running which handles the requests in case of increased load. If yes, do these instances share storage? How are requests routed to one of the instances to be served?
OR
b.Is it beneficial for distributed environment like Kubernetes where a node acting as listener accepts the Diameter requests and passes it over to pod running on other machine(which is not exposed to outer world) which then serves the request and responds back following the same path via listener node?
OR
c. Both a. and b.