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                ## Hash(哈希) Redis hash 是一個鍵值(key=>value)對集合。 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。 ### 實例 DEL runoob用于刪除前面測試用過的 key,不然會報錯:**(error) WRONGTYPE Operation against a key holding the wrong kind of value** ![](https://www.runoob.com/wp-content/uploads/2014/11/B104156B-7270-4D03-8EB3-B72D4022ED78.jpg) ~~~ redis 127.0.0.1:6379> DEL runoob redis 127.0.0.1:6379> HMSET runoob field1 "Hello" field2 "World" "OK" redis 127.0.0.1:6379> HGET runoob field1 "Hello" redis 127.0.0.1:6379> HGET runoob field2 "World" ~~~ 實例中我們使用了 Redis**HMSET, HGET**命令,**HMSET**設置了兩個field=>value對, HGET 獲取對應**field**對應的**value**。 每個 hash 可以存儲 232\-1 鍵值對(40多億)。 * * *
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