Building Distributed
Applications
Using the Progress AppServer
Understanding AppServer Operating Modes
When you configure an AppServer, you specify an operating mode that indicates how the Application Broker manages its Application Server process pool and assigns client requests to Application Server processes within the pool. The choice of operating mode has a major affect on the performance and design of your AppServer application (the procedures that run on the AppServer).
Any 4GL procedure can determine the operating mode of the AppServer it is running on by reading the value of the SERVER-OPERATING-MODE attribute on the SESSION system handle. This is a CHARACTER parameter that returns the name of the operating mode as a string.
The following sections describe these operating modes in detail.
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