Returns a substring of the string stored at a key.
GETRANGE
key start
end
Returns the substring of the string value stored at key
,
determined by the offsets start
and end
(both
are inclusive). Negative offsets can be used in order to provide an
offset starting from the end of the string. So -1 means the last
character, -2 the penultimate and so forth.
The function handles out of range requests by limiting the resulting range to the actual length of the string.
Bulk string reply: The substring of the string value stored at key, determined by the offsets start and end (both are inclusive).
O(N) where N is the length of the returned string. The complexity is ultimately determined by the returned length, but because creating a substring from an existing string is very cheap, it can be considered O(1) for small strings.
@read @slow @string
127.0.0.1:6379> SET mykey "This is a string"
OK
127.0.0.1:6379> GETRANGE mykey 0 3
"This"
127.0.0.1:6379> GETRANGE mykey -3 -1
"ing"
127.0.0.1:6379> GETRANGE mykey 0 -1
"This is a string"
127.0.0.1:6379> GETRANGE mykey 10 100
"string"
APPEND, DECR, DECRBY, GET, GETDEL, GETEX, INCR, INCRBY, INCRBYFLOAT, LCS, MGET, MSET, MSETNX, SET, SETRANGE, STRLEN.