list operation
lpush: insert
lpush from the left list 1 2 3 4 5 6 7
rpush: insert
rpush list2 1 2 3 4 5 6 7 from the right
View data
lrange list 0 -1
Popup data pops up
from the left: lpop list
Pop from the right: rpop list2
get length
llen list
Access
lindex list 2 by index
Popup blpop list with timeout 10
set a value to an index
lset list 2 0
lrange list 0 -1
Intercept a segment
ltrim list 1 2
lrange list 0 -1
append
rpush a 10