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Emakin performs most of the heavy operations in the background to achieve scalable and high performance outputs. These background operations are executed by emakin service agent without any user interaction.

When a new process is started by the user, workflow state is recorded in the database without any further processing, and creates a couple of background jobs. Service agents pull the jobs from the queue and try to process in background. If an error occurs while processing the job, transaction state is rollbacked and error state is reported to the system administrators. When an administrator resolves the issue, job is re-queued in the system, from the job manager, to the process again. Some of the errors are automatically recovered by the system and queued again with time delay.

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Service agents use multiple threads, and can also be deployed to any number of hardware instances to perform parallel execution. Jobs are executed in order of priority, and a single service agent can complete 600 jobs per minute for the basic workflow operations. This number is highly dependent on the job definition and hardware specifications.

Job Details

Each job has the following properties:

Type
Type of a job. 

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State
State of a job. Can be one of the following values; Waiting, Processing, Error, Completed, Aborted.

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For "Aborted" and "Completed" states, job is automatically deleted from the system if the "Delete After" date passed. Image Removed

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Job Log

Each job contains a log about detailed information of what is performed in the background. Each log line has an in log level like Debug, Information, Warning, Error.Image Removed

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Job Types

Workflow Jobs

Scheduled Task

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Created when the initiate type workflow task is scheduled to start periodically. Created by the Scheduled Task per task definition. You can find more details in the Task Evaluation section. 

Work Item Evaluation

Created when the normal type workflow task is scheduled to check periodically. Created by the Scheduled Task per work item instance. You can find more details in the Task Evaluation section.

Work Item Processing

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Emakin uses following default configuration to manage the job queue.