A request processor is responsible for handling client requests by passing the request through a load-balancing algorithm or one or more subordinate request processors. The request processor is also the PingDirectoryProxy server component that performs proxy transformations. You can create one of the following types of request processors:
Proxying request processor. This request processor is responsible for passing allowed operations through a load balancing algorithm. Proxy transformations can be applied to requests and responses that are processed. Multiple servers can be configured to provide high availability and load balancing, and various transformations can be applied to the requests and responses that are processed.
Entry-balancing request processor. This request processor is used to distribute entries under a common parent entry among multiple backend sets. A backend set is a collection of replicated directory servers that contain identical portions of the data. This request processor uses multiple, subordinate proxying request processors to process operations and maintains in-memory indexes to speed the processing of specific search and modify operations.
Failover request processor. This request processor performs ordered failover between subordinate proxying processors, sometimes with different behavior for different types of operations.