Which of the following is a load-balancing method that does not maintain session persistence?

Which of the following is a load-balancing method that does not maintain session persistence?

• A. IP Hash
• B. Least Connectivity
• C. Round Robin
• D. Session Affinity

Answer: (C)

The method that does not maintain session persistence is Round Robin. Round Robin is a straightforward load balancing technique where requests are distributed sequentially among the available servers. Each server in the pool is selected in a rotating manner for each new incoming request, which means there is no dependency on prior requests or sessions. This characteristic implies that clients do not remain connected to the same server for the duration of their interactions, thus not maintaining session persistence. In contrast, methods like IP Hash use the client's IP address to consistently route requests from the same client to the same server, ensuring session persistence. Least Connectivity directs traffic to the server with the least current connections, which could lead to particular clients being routed to different servers based on connection status but it does not guarantee persistent sessions either – though it is generally seen as more dynamic than Round Robin. Session Affinity explicitly refers to the practice of ensuring that a user's session is consistently handled by the same server, which is the opposite of what is observed in the Round Robin approach. Thus, it clearly stands out as the load-balancing method that does not maintain session persistence.

The method that does not maintain session persistence is Round Robin. Round Robin is a straightforward load balancing technique where requests are distributed sequentially among the available servers. Each server in the pool is selected in a rotating manner for each new incoming request, which means there is no dependency on prior requests or sessions. This characteristic implies that clients do not remain connected to the same server for the duration of their interactions, thus not maintaining session persistence.

In contrast, methods like IP Hash use the client's IP address to consistently route requests from the same client to the same server, ensuring session persistence. Least Connectivity directs traffic to the server with the least current connections, which could lead to particular clients being routed to different servers based on connection status but it does not guarantee persistent sessions either – though it is generally seen as more dynamic than Round Robin.

Session Affinity explicitly refers to the practice of ensuring that a user's session is consistently handled by the same server, which is the opposite of what is observed in the Round Robin approach. Thus, it clearly stands out as the load-balancing method that does not maintain session persistence.