twitter/commons — pull request #285 by benjyw (2014-04-22 21:35:53+00:00)
Title: Expose the ttl and install_cache properties on CachingObtainer.

They're "public" anyway, in the sense that they're passed into
__init__(). But this allows the PantsObtainer subclass of CachingObtainer
to access them in a natural way and use them to initialize the temporary
CachingObtainers it delegates to.