TOUCH key [key ...]
Available since: 3.2.1
Time complexity: O(N) where N is the number of keys that will be touched.
ACL categories:
@keyspace
@read
@fast
Alters the last access time of a key(s). A key is ignored if it does not exist.
@return
@integer-reply: The number of keys that were touched.
@examples
redis> SET key1 "Hello"
TBD
redis> SET key2 "World"
TBD
redis> TOUCH key1 key2