Obtains the current time. By default this is the wall clock time in seconds. This time value is used to find the least recently updated cache item and stored as create time. A subclass may override this method to use a different time unit or clock.
the current time in seconds.
See Implementation
Obtains the current time. By default this is the wall clock time in seconds. This time value is used to find the least recently updated cache item and stored as create time. A subclass may override this method to use a different time unit or clock.