more Opts (cache, recursive)

[tuana9a]

lazy will store all in memory, so add caching = true | false to give user control whether to store in pool or not

[tuana9a]

Also find out this might be helpfull https://github.com/google/guava/wiki/CachesExplained

[tuannm-techpro]

Opts should includes: cache = true | false, recursive = true | false