Unless you work in the telecommunications industry your knowledge of how it works is likely to be quite limited, therefore it is worth describing the basics.

This article demonstrates a technique for tracking exceptions across process boundaries in distributed systems using Globally Unique Identifiers (GUIDs); data from log files, bug reports, and on-screen error messages can then be correlated, allowing specific errors to be pinpointed.

During the development of a an internet based GIS system we came across the problem of maintaining session state on two separate server entities...