十、Redis集合类型实际存储案例

Redis set是集合类型的数据结构，集合类型比较适用于聚合分类。比如：标签、共同好友、网站独立IP等都是集合适用的场景，下面将以标签为案例进行实际操作。

存储文章标签

文章标签互不相同且对顺序没有要求。每篇文章使用键名为 article:文章ID:tags的键存储文章标签。

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(103, 110, 149)"># 给ID为6的文章增加标签</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(255, 83, 112)">127</span>.0.0.1:6379> sadd article:6:tags PHP MySQL Vue Html</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">(integer) <span style="box-sizing: border-box;color: rgb(255, 83, 112)">4</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(103, 110, 149)"># 删除标签</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(255, 83, 112)">127</span>.0.0.1:6379> srem article:6:tags Html</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">(integer) <span style="box-sizing: border-box;color: rgb(255, 83, 112)">1</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(103, 110, 149)"># 显示所有标签</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(255, 83, 112)">127</span>.0.0.1:6379> smembers article:6:tags</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(255, 83, 112)">1</span>) <span style="box-sizing: border-box;color: rgb(195, 232, 141)">"Vue"</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(255, 83, 112)">2</span>) <span style="box-sizing: border-box;color: rgb(195, 232, 141)">"PHP"</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(255, 83, 112)">3</span>) <span style="box-sizing: border-box;color: rgb(195, 232, 141)">"MySQL"</span></span>

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小白

2020年09月01日