tree 71cc3fd99e878a473f515c3fa37925244e7a33f7
parent 9fa82ac8c847ea6f62161865ad1fccf443d73b3f
author humingcheng <humingcheng1990@163.com> 1578045949 +0800
committer Shawn <xiaoliang.tian@gmail.com> 1578045949 +0800

Add comment for cache, add interface CacheReader, to make it easy to understand (#615)