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通用点赞设计思路
source link: https://juejin.im/post/5bfb72cce51d4576c64d5de3
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点赞作为一个高频率的操作，如果每次操作都读写数据库会增加数据库的压力，所以采用缓存+定时任务来实现。点赞数据是在redis中缓存半小时，同时定时任务是每隔5分钟执行一次，做持久化存储，这里的缓存时间和任务执行时间可根据项目情况而定。 优点 1.降低对数据库的影
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