Redis Ltrim Command

Redis Lists

Redis Ltrim trims a list, meaning it keeps only the elements within the specified range; elements outside the specified range will be removed.

Index 0 represents the first element of the list, 1 represents the second element, and so on. You can also use negative indexes, where -1 represents the last element of the list, -2 represents the second-to-last element, and so on.

Syntax

The basic syntax of the Redis Ltrim command is as follows:

redis 127.0.0.1:6379> LTRIM KEY_NAME START STOP

Available Versions

>= 1.0.0

Return Value

When the command is executed successfully, it returns ok.

Examples

redis 127.0.0.1:6379> RPUSH mylist "hello"
(integer) 1
redis 127.0.0.1:6379> RPUSH mylist "hello"
(integer) 2
redis 127.0.0.1:6379> RPUSH mylist "foo"
(integer) 3
redis 127.0.0.1:6379> RPUSH mylist "bar"
(integer) 4
redis 127.0.0.1:6379> LTRIM mylist 1 -1
OK
redis 127.0.0.1:6379> LRANGE mylist 0 -1
1) "hello"
2) "foo"
3) "bar"

Redis Lists

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