HOW TO USE CACHE AND CACHE DEPENDENCY ?
Using cache is an easy way to increase efficiency in programs. By using
cache techniques we can store the data in RAM that is normally in
harddisk or another stuff whose access time is much bigger than RAM's.
In this article, I will write a method that gets the subdirectory names
in a directory and return them to caller. ( this method can be used,
for example, to populate theme names in a dropdownlist so that user can
select her preferred style. "When [Further]