Hash Commands

Hash commands allow you to store key-value pairs as hash tables (also known as maps or dictionaries). Each hash can store up to 2^32 - 1 field-value pairs.

Command List

HDEL

Deletes one or more specified fields from a hash table

HEXISTS

Checks if a specified field exists in a hash table

HGET

Gets the value of a specified field stored in a hash table

HGETALL

Gets all fields and values in a hash table

HKEYS

Gets all field names in a hash table

HLEN

Gets the number of fields in a hash table

HMGET

Gets the values of all given fields

HMSET

Sets multiple field-value pairs to a hash table simultaneously

HSET

Sets a field-value pair to a hash table

HSETNX

Sets the value of a field in a hash table only if the field does not exist

HSTRLEN

Returns the string length of the value of a specified field in a hash table

HVALS

Returns all values in a hash table

Use Cases

Hash commands are ideal for representing objects, such as user profiles, product information, etc. You can store all properties of an object in a single hash, with each property as a field.

For detailed usage and parameters of each command, please refer to the individual command documentation linked above.