Search IPC

This post deals with how the various components of Livelink search interact with each other.

Grid Registry

Grid Registry is a process which is used by other components to coordinate their use of RMI. On startup, each component reports its RMI port usage to Grid registry, and obtain RMI port of other processes from it. The processes then use RMI directly without further involving the Grid Registry.

Inter-Process Communication

Internal RMI (Remote Method Invocation) Communication

Search Federator uses RMI protocol to communicate with Search Engines and Update Distributor uses RMI protocol to communicate with the Index Engines.

Internal Socket Connections

Beginning with SE10 Update 4, sockets can be used as an alternative to RMI. This method is used by Content Server 10.

The direct socket approach uses fewer threads than the equivalent RMI configuration. In direct socket connection, RMI Grid registry is not required.