Option 4 - Chaining Several Servers Together

This option is designed for high-volume Web sites. In this configuration you will have chosen one of the three previous options for splitting your primary Web traffic from the DecisionScript-specific traffic, but you will also use one or more additional computers for overflow DecisionScript traffic.

In the Sessions sheet of DecisionScript Server's Properties dialog box, you can enter the Maximum number of sessions that you will allow to run on the server at one time and the URL for the secondary server that will handle any overflow.

In the example above, the maximum number of sessions is set to 50. This means that the 51st visitor who attempts to run a script will be bounced to the secondary server. The secondary server can be set up in exactly the same manner as the primary DecisionScript server so that once it is at capacity, the visitor is bounced to the third server and so on. With this configuration you can keep adding computers to the chain as your Web traffic grows.

For a more detailed explanation of this configuration, please refer to the section Getting Optimal Performance from Your Server.

If you need to run a large number of servers simultaneously, contact Vanguard Software about its DecisionScript Load-Balancing Gateway. This application allows you to set up a single gateway that routes all DecisionScript traffic to the least loaded computer. With this software, your Web site visitors will experience the best possible performance and your site will not go down if individual computers fail or are taken off line.