Gateway Operational Layer

The gateway operational layer scales as processing demands increases, primarily based on the volume of requests.

The gateway operational layer consists of the following components:
Apache HTTP Server
The Apache HTTP Server is an optional Apache layer that may be used in the DMZ to terminate the incoming HTTP(s) transport.
Core Engine
The core engine is a higher-performance event-based service-request routing engine that receives requests as events and uses the rules engine to determine how requests are handled.
Cache Agent
The cache agent stores the cache data for all objects of the cluster.