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.

Reference Information - Previous

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.