# YYKit学习笔记

YYKit是集大成者的第三方表现，堪称国内最优秀的框架。因此，在YYKit中有太多的技术点值得挖掘思考，本文用来记录YYKit源码阅读中的心得以及认为有价值的技术点 QoS The following Quality of Service (QoS) classifications are used to indicate to the system the nature and importance of work. They are used by the system to manage a variety of resources. Higher QoS classes receive more resources than lower ones during re...