How redis gets data

Redis provides the following ways to obtain data: GET: Get the value of the specified key. MGET: Get the values of multiple keys at the same time. HGET: Get the value of the specified field in the hash table. HGETALL: Get the values of all fields in the hash table. LINDEX: Gets the element at the specified index in the list. LRANGE: Get the elements in the specified range in the list.

How Redis obtains data

Redis provides multiple ways to obtain stored data, the most commonly used method As follows:

1. GET

The GET command is the simplest method to obtain the value of the specified key. Syntax:

GET key

For example:

GET username

2. MGET

The MGET command is used to obtain the values of multiple keys at the same time. Syntax:

MGET key1 key2 ... keyN

For example:

MGET username email age

3. HGET

The HGET command is used to obtain the value of the specified field in the hash table. Syntax:

HGET key field

For example:

HGET user:1 username

4. HGETALL

The HGETALL command is used to get the values of all fields in the hash table. Syntax:

HGETALL key

For example:

HGETALL user:1

5. LINDEX

The LINDEX command is used to get the element at the specified index in the list. Syntax:

LINDEX key index

For example:

LINDEX list:1 0

6. LRANGE

The LRANGE command is used to obtain elements within the specified range in the list. Syntax:

LRANGE key start end

For example:

LRANGE list:1 0 2

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