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Scheduler
Stroom has two main types of schedule, a simple frequency schedule that runs the job at a fixed time interval or a more complex cron schedule.
Note
This scheduler and its syntax are also used for Analytic Rules .
Frequency Schedules
A frequency schedule is expressed as a fixed time interval.
The frequency schedule expression syntax is stroom’s standard duration syntax and takes the form of a value followed by an optional unit suffix, e.g. 10m for ten minutes.
| Prefix | Time Unit |
|---|---|
| milliseconds | |
ms |
milliseconds |
s |
seconds |
m |
minutes |
h |
hours |
d |
days |
Cron Schedules
cron is a syntax for expressing schedules.
For full details of cron expressions see Cron Syntax
Stroom uses a scheduler called Quartz which supports cron expressions for scheduling.