MACROMEDIA COLDFUSION MX-CLUSTERCATS, Use Manual

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ClusterCATS overview 3
The following table introduces the ClusterCATS capabilities:
Detailed overview
Application and server load management
ClusterCATS improves user response time by managing application load and web server
load across multiple servers.
You establish load management policy through two administrator-defined response time
thresholds. You configure these for each server. One threshold sets the level at which load
management is activated. If this level of activity is reached, ClusterCATS gradually
redirects a percentage of new server requests to the least-loaded server.
The other threshold defines the peak, or maximum, load level. This is defined as the load
level that should not be reached on that server. If this threshold is attained, an alarm is
sent and requests is redirected.
Feature Description
Application and server
load management Allows administrators to configure server load thresholds to
provide optimum user response time in JRun/ColdFusion
applications. ClusterCATS Server load management protects
users from overloaded servers.
Server failover Provides seamless failover of a web server because of a
hardware, software, or network connection to another member in
the cluster. ClusterCATS shields users from unplanned or
planned server failures.
Session state
management Allows session state to be maintained across your website using
a unique method that eliminates the source IP address server
overload problems caused by proxy users. ClusterCATS
application state management ensures users are not redirected
away from a server while maintaining state.
Application monitor You can configure ClusterCATS to monitor the JRun/ColdFusion
server or a JRun/ColdFusion application, and restart the server or
application if a failure occurs.
Distributed operations Exploits a distributed operations model, eliminating traffic
bottlenecks and maximizing performance and availability. All
servers share knowledge of application or web server
performance, and server availability. Each server can respond
directly to a request or redirect a request to a faster server.
Centralized
management Provides a central console to manage and configure all web
servers in your cluster. ClusterCATS Explorer provides both
high-level and detailed views of the status of one or more
websites and all the resources within a website.