Minimizing Delay for Cached Data with Continuous Autorefresh
You can specify continuous autorefresh with an autorefresh interval of 0 milliseconds. With continuous autorefresh, the next autorefresh cycle is scheduled as soon as possible after the last autorefresh cycle has ended.
Continuous autorefresh could result in a higher resource usage when there is a low workload rate on the Oracle database, since the cache agent could be performing unnecessary round-trips to the Oracle database.
See CREATE CACHE GROUP and ALTER CACHE GROUP in the Oracle TimesTen In-Memory Database SQL Reference.