What method redirects client requests to one server in a cluster?

The method that redirects client requests to one server in a cluster is load balancing. Load balancing involves distributing client requests across multiple servers to optimize resource use, maximize throughput, reduce response time, and ensure reliability. However, when a specific request needs to be directed to one particular server, load balancing can be adjusted to route requests based on certain criteria, such as session persistence or affinity. This can be particularly useful when the application requires that all requests from a client during a session be handled by the same server to maintain state or manage session data effectively.

Clustering generally refers to grouping multiple servers to work together as a single system but does not specifically address the redirection of requests to individual servers. Failover is focused on transferring the workload to a backup server when a primary server fails, ensuring continuity of service but not necessarily dictating how requests are redirected during normal operations. Session management deals with maintaining session state across client interactions but does not directly refer to how requests are directed within server clusters. Therefore, the most fitting method for redirecting client requests to one server in a cluster is indeed load balancing.