Knowledge of proxy operation principles, load balancing?

A proxy is an intermediary between a client and a server that receives requests from the client and forwards them to the target server. Proxies can be used for caching, traffic filtering, anonymization, or load balancing.

Load balancing is the distribution of incoming requests across multiple servers or resources to improve performance and fault tolerance. The load balancer monitors the servers' status and directs traffic so that the load is evenly distributed.

Example: A website is served by three servers. The load balancer accepts user requests and distributes them among these servers, while the proxy can cache frequently requested data, reducing the load on the servers.