Duration string format
Vault uses a unique duration string format as part of its configuration and APIs.
This format is used throughout Vault wherever durations are provided. For
example, telemetry configuration contains various options using this format, such as
usage_gauge_period, which is the interval of collection for high-cardinality usage data.
A duration string is a possibly signed sequence of decimal numbers, each with an optional fraction and an optional unit suffix. If no unit is given, we interpret the numbers as seconds.
Valid time units are:
Example values could be: