In load balancing they call this persistence. You are describing a case where you should persist to the server you land on. In this scenario, unless each reque

In load balancing they call this persistence. You are describing a case where you should persist to the server you land on. In this scenario, unless each request is exactly the same you will end up with uneven load as some sessions persist longer than others. This can still be stateless with use of a cookie for protocols that support it but is not the idealized "round robin and every request takes same time and resources". The other alternative is a stateless app that is architected for round robin lb.