Load balancing offers traffic management for transactions at Layer 4 of the OSI model, which is the network protocol layer (TCP/UDP). Load balancing at L4 delivers traffic with limited network information. It does this with an algorithm (that is, round-robin), which calculates the best server based on the low number of connections and fast server response times.
The debate of L4/L5 versus L5/L7 is irrelevant for us if the L4 layer cannot provide load balancing for gRPC or HTTP/2 protocol, which uses a long-lived session with multiple requests.
HTTP/1.1 protocol load balancing works well at the connection level (L4) since one connection ...
