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HashMap, and provides an interface to directly access this MAP member. As the figure shows, the Key is the user ID, and value is a map. The key of this Map is the property name of the member, and value is the property value. This data can be modified and accessed directly through its internal map key (Redis called internal map key field), that is, through the key (user ID) + field (attribute tag) can manipulate the corresponding attribute data. There are two ways to implement the current HashMa
-dimensional array to compact storage, without the use of a real HASHMAP structure , the encoding of the corresponding value Redisobject is Zipmap, and when the number of members increases, it automatically turns into a true hashmap, at which time encoding is HT. 2 Redis data type related commands 2.1String Command String data type String The string type is a redis base data type that can store any form of string, including binary data. Set Key valu
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