PSETEX
Syntax
1. PSETEX key milliseconds value
Time complexity: O(1)
ACL categories: @write, @string, @slow
PSETEX works exactly like SETEX with the sole difference that the expire time is specified in milliseconds instead of seconds.
Examples
1. dragonfly> PSETEX mykey 1000 "Hello"
2. "OK"
3. dragonfly> PTTL mykey
4. (integer) 1000
5. dragonfly> GET mykey
6. "Hello"
