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Zend Server Reference Manual
Job Queue
The Job Queue page is accessed from Server Setup | Job Queue.
From this page, you can define the different settings for configuring the Job Queue Component.
This component is used to schedule jobs to run a PHP script. This can be done by creating a Job in
Recurring Jobs or by using the API.
In a clustered environment all jobs will be run on a single dedicated server belonging to the cluster.
The Job Queue page is a settings definition page for the Job Queue Component that provides Job
scheduling capabilities.
The following Job Queue Daemon settings available:

Default Job Queue Daemon address-

Maximum number of concurrent running jobs -Set the amount of jobs that are permitted
to run at the same.

Days to keep completed and failed jobs in database - define how long you want to keep
job related information.

Retry Interval - Set the amount of time to wait before trying to re-run a failed job.

Maximum number of retries - Set the amount of times to re-run a job that failed to run.

Report job run time skew after X seconds of delay

Report high job concurrency when job count is X below the limit
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