Title: Lock Server
 
Authors: Robert Hirschfeld (hirschfeld@rz.tu-ilmenau.de)
         Jeff Eastman (jeff@windwardsolutions.com)
 
Contact Address: Robert Hirschfeld
                 Kopernikusstr. 4
                 98693 Ilmenau
                 Germany
                 Tel. +49-3677 / 87 74 61
 
Version: 9. June 1997
 
Subject Area: Concurrency, Distribution
 
Keywords: Lock Server, Resource Integration, Concurrency Control
 
 
Abstract:
 
In enterprise information systems based on a multi-tier distribution
architecture, there are several clients working with shared resources.
When designing such a system one must ensure that each client that
accesses such shared resources does not interfere with other clients
accessing and modifying the same resources. If the resource in
question does not has a thread safe interface and/or it does not
provide concurrency control mechanisms, a Lock Server attached to
that shared source can help provide a controlled concurrent access
which allows each client to work with a consistent view of the
resource. This paper discusses the architecture of such a shared
Lock Server.