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Redis Lists are simply lists of strings, sorted by insertion order. You can add elements in Redis lists in the head or the tail of the list.
Maximum length of a list is 232 – 1 elements (4294967295, more than 4 billion of elements per list).
Example
redis 127.0.0.1:6379> LPUSH tutorials redis (integer) 1 redis 127.0.0.1:6379> LPUSH tutorials mongodb (integer) 2 redis 127.0.0.1:6379> LPUSH tutorials mysql (integer) 3 redis 127.0.0.1:6379> LRANGE tutorials 0 10 1) "mysql" 2) "mongodb" 3) "redis"
In the above example, three values are inserted in Redis list named ‘tutorials’ by the command LPUSH.
Redis Lists Commands
Following table lists some basic commands related to lists.
| Sr.No | Command & Description |
|---|---|
| 1 | BLPOP key1 [key2 ] timeout
Removes and gets the first element in a list, or blocks until one is available |
| 2 | BRPOP key1 [key2 ] timeout
Removes and gets the last element in a list, or blocks until one is available |
| 3 | BRPOPLPUSH source destination timeout
Pops a value from a list, pushes it to another list and returns it; or blocks until one is available |
| 4 | LINDEX key index
Gets an element from a list by its index |
| 5 | LINSERT key BEFORE|AFTER pivot value
Inserts an element before or after another element in a list |
| 6 | LLEN key
Gets the length of a list |
| 7 | LPOP key
Removes and gets the first element in a list |
| 8 | LPUSH key value1 [value2]
Prepends one or multiple values to a list |
| 9 | LPUSHX key value
Prepends a value to a list, only if the list exists |
| 10 | LRANGE key start stop
Gets a range of elements from a list |
| 11 | LREM key count value
Removes elements from a list |
| 12 | LSET key index value
Sets the value of an element in a list by its index |
| 13 | LTRIM key start stop
Trims a list to the specified range |
| 14 | RPOP key
Removes and gets the last element in a list |
| 15 | RPOPLPUSH source destination
Removes the last element in a list, appends it to another list and returns it |
| 16 | RPUSH key value1 [value2]
Appends one or multiple values to a list |
| 17 | RPUSHX key value
Appends a value to a list, only if the list exists |
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