TTL Expression Syntax

Specifying Time-To-Live values.

The following table includes a list of TTL expressions:

Custom expiration syntax examples	Description
30m	Expires after 30 minutes.
24h	Expires after 24 hours.
5d	Expires after 5 days.
1w	Expires after 1 week.
3M	Expires after 3 months (3*30 days).
1y	Expires after 1 year (365 days).
modified +24h	Calculate 24 hours since modification time, and set expiration accordingly.