In a typical multi-node CA API Gateway Environment with MySQL Database Replication enabled users may notice that Nodes 1 and Nodes 2 have a higher CPU and Memory usage than subsequent processing nodes (Node 3, Node 4, etc...)
Sometimes users interpret this perceived imbalance as a Load Balancing issue but it is a normal consequence of the CA API Gateway cluster architecture.
The reason compute utilization is typically Higher on Nodes 1 and Nodes 2 of your CA API Gateway cluster is due to Node 1 and Node 2 containing and processing MySQL Database activity
Release : 9.x
Component : CA API Gateway