The expiration time of Redis

Command	Instances and commands
Persist	Persist Key-name the expiration time of the removal key
Ttl	TTL key-name How many seconds before the key expires
Expire	Expire key-name seconds set expiration time
Expireat	Expireat key-name Timestamp set expiration time, Unix timestamp
Pttl	Pttl key-name View expiration time in milliseconds
Pexpire	Pexpire key-name milliseconds set expiration time in milliseconds
Pexpireat	Pexpireat key-name Timestamp-uninx Set expiration time, unit milliseconds, Uninx timestamp

The expiration time of Redis