Method 

Description 

closeIndex 

Close an index specified by filename or filename pattern 

getInUseCount 

Number of open indexes that are currently in use 

getMaxCount 

Maximum number of indexes to keep in the cache 

getOpenIndexCount 

Number of indexes currently open in the cache 

setAutoCloseTime 

Number of seconds before an unused index can be closed automatically. 

setAutoReopenTime 

Number of seconds an index can be left open before it is automatically closed and reopened.