Logging in Action

Appendix B. Processing times and dates, regular expressions, and other configuration values

B.1 Expressing relative time

Some configuration attributes of Fluentd require us to express time in a relative manner, (i.e., how long from now). Such values in a readable form are best done using simple integers and time types—seconds, minutes, and hours. The following table shows how this is done in Fluentd.

Interval	Character	Examples
Seconds	s	10s → 10 seconds 0.1s → 100ms
Minutes	m	1m → 1 minute 0.25m → 15 seconds
Hours	h	24h → 24 hours 0.25h → 15 minutes
Days	d	1d → 1 day 0.5d → 12 hours

B.2 Expressing dates and times

The date representation for input and output is driven by how Ruby can parse custom ...