only call to redis once per request
only clear cache if store responds to cache clearning
don't overwrite data when the read fails
update error name and use .empty?
move @cache||= outside of safely do
use cache.empty?
some specs for redis_store
make methods private
one more spec
DRY up spec a little
use one line syntax
use HGETALL and HGET
remove unused error class
use stub_const
simplify logic
Merge pull request #4 from envato/one_redis_call_per_request

Only call to redis once per request