You can configure the Interact runtime servers in a server group to use a multicast address for sharing cache data. This is referred to as a
distributed cache. The cacheType parameter specifies whether you are using the built-in EHCache caching mechanism in
local (stand-alone) mode or
distributed (as with a runtime server group).
If you select Distributed for the cacheType, all of the servers sharing the cache must be part of the same, single server group. You must also enable multicast to work between all members of a server group.
If you specify that the cacheType parameter is "distributed," you are configuring the cache to operate via multicast between all members of an
Interact runtime server group. The multicastIPAddress value is the IP address that all the
Interact servers for the server group use for listening.
If you specify that the cacheType parameter is "distributed," the
multicastPort parameter indicates the port that all of the
Interact servers for the server group use for listening.
When the configuration property overflowToDiskis set to
Yes, this configuration property specifies the disk file that will hold the cache entries that are overflowed from memory. If this configuration property does not exist or its value is not valid, the disk file is automatically created in the operating system's default temporary directory.