[string字符类型应用场景](string%E5%AD%97%E7%AC%A6%E7%B1%BB%E5%9E%8B%E5%BA%94%E7%94%A8%E5%9C%BA%E6%99%AF.md) [set get](setget.md) [incr 自增 decr 自减](incr%E8%87%AA%E5%A2%9Edecr%E8%87%AA%E5%87%8F.md) [substr字符串截取](%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%88%AA%E5%8F%96.md) [expire 过期时间](%E8%BF%87%E6%9C%9F%E6%97%B6%E9%97%B4.md) [列出所有的键](%E5%88%97%E5%87%BA%E6%89%80%E6%9C%89%E7%9A%84%E9%94%AE.md) [del删除键值](del%E5%88%A0%E9%99%A4%E9%94%AE%E5%80%BC.md) [获取类型](%E8%8E%B7%E5%8F%96%E7%B1%BB%E5%9E%8B.md) [rename改键名](%E6%94%B9%E9%94%AE%E5%90%8D.md) [查看存储键与删除所有键](%E6%9F%A5%E7%9C%8B%E5%AD%98%E5%82%A8%E9%94%AE%E4%B8%8E%E5%88%A0%E9%99%A4%E6%89%80%E6%9C%89%E9%94%AE.md) [Redis 16个数据库操作](Redis16%E4%B8%AA%E6%95%B0%E6%8D%AE%E5%BA%93%E6%93%8D%E4%BD%9C.md) [随机获取一个键](%E9%9A%8F%E6%9C%BA%E8%8E%B7%E5%8F%96%E4%B8%80%E4%B8%AA%E9%94%AE.md)