The caching of name-to-IP address information can be performed at many levels within the network communication software stack. These levels include within the operating system, the Java virtual machine, and within WebSphere Application Server components, such as core groups. Core groups use caching to reduce the overhead that is associated with IP address name lookup. You can adjust the interval at which a core group IP cache is cleared.
Before you begin
By default, a core group cache is cleared every 60 minutes. You can determine the correct time interval for your environment.Why and when to perform this task
You want to change the length of time that IP addresses are retained in a core group cache.To change how frequently a core group cache is cleared:
Steps for this task
If the IBM_CS_IP_REFRESH_MINUTES property already exists, click on the property name and in the Value field, specify the length of time, in minutes, you want to wait before a core group cache is cleared.
If this property does not already exist, click New and create it:
Result
After the servers restart, all of the core group members run with the new discovery protocol setting.Related concepts
Core groups
Related tasks
Setting up a high availability environment