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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                [TOC] # Redis 哈希(Hash) * Redis hash 是一個 string 類型的 field 和 value 的映射表,hash 特別適合用于存儲對象。 * Redis 中每個 hash 可以存儲 232\- 1 鍵值對(40多億)。 **實例** ``` 127.0.0.1:6379> HMSET runoobkey name "redis tutorial" description "redis basic commands for caching" likes 20 visitors 23000 OK 127.0.0.1:6379> HGETALL runoobkey 1) "name" 2) "redis tutorial" 3) "description" 4) "redis basic commands for caching" 5) "likes" 6) "20" 7) "visitors" 8) "23000" ``` ## Redis hash 命令 1. Redis hdel 命令用于刪除哈希表 key 中的一個或多個指定字段,不存在的字段將被忽略。 **語法** redis Hdel 命令基本語法如下: ~~~ redis 127.0.0.1:6379> HDEL KEY_NAME FIELD1.. FIELDN ~~~ **可用版本** `>= 2.0.0` **返回值** 被成功刪除字段的數量,不包括被忽略的字段。 **實例** ~~~ redis 127.0.0.1:6379> HSET myhash field1 "foo" (integer) 1 redis 127.0.0.1:6379> HDEL myhash field1 (integer) 1 redis 127.0.0.1:6379> HDEL myhash field2 (integer) 0 ~~~
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                              哎呀哎呀视频在线观看