Architecture And Components - HP NonStop Pathway/iTS Programming Manual

Introduction
TS/MP is described in a separate manual set. For more information about that product,
see the TS/MP Management Programming Manual.

Architecture and Components

The Pathway subsystem includes a group of related software tools that enable your
organization to develop, install, and manage online transaction processing
applications.
Transaction processing applications consist of two types of programs: requester
programs (called clients in other environments) and server programs. Among other
benefits, the requester/server design allows application logic to be distributed near the
resources it manages. For example, presentation services are located in requester
programs near the I/O devices; database logic resides in server programs near the
database. Requesters and servers communicate using the message system provided
by the NonStop operating environment.
Link managers (such as terminal control processes (TCPs) and TS/MP LINKMON
processes) coordinate the sharing of links between requesters and server processes.
The PATHMON process, in addition to creating, configuring, and globally managing
server classes, grants links to link managers that request access to server processes.
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Architecture and Components