一、前言在高访问量的web系统中,大最的请求会造成数据库访问的压力增大,并可能造成系统响应变慢并最终影响到用户体验。在系统设计中,增加硬件资源和应用节点的同时,进行缓存设计已经变的不可或缺。针对一些公用的、变化不大的、用户只读的数据采用缓存系统存储和访问,可以提高系统的性能,提供比RDB更高的TPS和扩展性。在技术和业务都可 I. INTRODUCTION In web traffic with high traffic, most requests increase the pressure on database access and can slow down the system response and ultimately impact the user experience. In the system design, adding hardware resources and application nodes at the same time, the design of the cache has become indispensable. For some public, little change, user-read-only data using cache system storage and access, can improve system performance, provide higher TPS and scalability than RDB. In technology and business can be