An Application Dispatcher
service is a collection of one or more Application Servers. The servers
might be running on one system or could be distributed across multiple
systems. All of the servers in a specified service are assumed to
have access to the same applications and data so that a particular
client request can be fulfilled by any server within the service.
All Application Dispatcher requests include a service name (the _SERVICE
parameter) that determines which service performs the request.
The Application Broker is responsible for selecting a particular server
belonging to that service and forwarding the request to that server.
During the
SAS/IntrNet
installation process, you
created a default service. The default service is a socket service with only one
server, the simplest type of service to set up and use. This service
is adequate for running the sample programs delivered with Application
Dispatcher and beginning to develop your own applications, but there
are many reasons that you might want to create additional services.
You might want to create separate services for different applications
so that you can distribute resources (such as memory, disk space,
or priority) among applications. You can create different services
with different levels of access as a simple form of security. Often,
you need to create separate services for development and production
application environments, so that development activities do not affect
production applications.
The following pages
address some of these issues and describe the process of creating
and maintaining services:
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Creating and Modifying Services
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