PEXPIRE

This command works exactly like EXPIRE but the time to live of the key is specified in milliseconds instead of seconds.

Options

The PEXPIRE command supports a set of options

• NX -- Set expiry only when the key has no expiry
• XX -- Set expiry only when the key has an existing expiry
• GT -- Set expiry only when the new expiry is greater than current one
• LT -- Set expiry only when the new expiry is less than current one

A non-volatile key is treated as an infinite TTL for the purpose of GT and LT. The GT, LT and NX options are mutually exclusive.

Examples

127.0.0.1:6379> SET mykey "Hello"
OK
127.0.0.1:6379> PEXPIRE mykey 1500
(integer) 1
127.0.0.1:6379> TTL mykey
(integer) 1
127.0.0.1:6379> PTTL mykey
(integer) 1480
127.0.0.1:6379> PEXPIRE mykey 1000 XX
(integer) 1
127.0.0.1:6379> TTL mykey
(integer) 1
127.0.0.1:6379> PEXPIRE mykey 1000 NX
(integer) 0
127.0.0.1:6379> TTL mykey
(integer) 1