IMiS ARChive backend service cron schedule syntax

Product:	IMiS/ARChive
Release:	All
Date:	08/09/2022

Case:

IMiS ARChive server uses backend services to process its tasks. Some services are "on-demand", other services are periodic tasks and uses modified cron schedule syntax for scheduling. In this article we describe IMiS ARChive schedule expression syntax for periodic backend tasks.

Description:

IMiS ARChive schedule expression syntax is cron based expression syntax, with a few modifications.

Syntax format:

[seconds] [minutes] [hours] [day in month] [month] [day in week]

Supported cron parameters are next:

Parameter "*" represents any value.
Parameter "," represents value list separator.
Parameter "-" represents value range.
Parameter "/" represents step value.

Example 1: Scheduled task will be run every full minute.

0 */1 * * * *: zero second, every minute with 1 minute step, every hour, every day in month, every month, every day in week

Example 2: Scheduled task will be run every day at 3 am.

0 0 3 * * *: - zero second, zero minute, third hour, every day in month, every month, every day in week

Example 3: Scheduled task will be run every day at 3:35 am.

0 35 3 * * *: - zero second, 35 minute, third hour, every day in month, every month, every day in week

Example 4: Scheduled task will be run every 15 seconds.

0,15,30,45 * * * * * : list of seconds where scheduled task starts, every minute, every hour, every day in month, every month, every day in week