Add a test for file serialization and one to ensure objects expire even after having been serialized and reloaded
Add a test for file serialization and one to ensure objects expire even after having been serialized and reloaded

zj8487/go-cache,robfig/go-cache,pmylund/go-cache,ggaaooppeenngg/cachemap,nothingmuch/go-cache,cognusion/go-cache-lru,jiangjin/go-cache,dustin/go-cache,patrickmn/go-cache,yxd-hde/go-cache