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Background Jobs
Introduction
Background jobs are used to queue some tasks to be executed in the background. You may need background jobs for several reasons. Here are some examples:
- To perform long-running tasks without having the users wait. For example, a user presses a 'report' button to start a long-running reporting job. You add this job to the queue and send the report's result to your user via email when it's completed.
- To create re-trying and persistent tasks to guarantee that a code will be successfully executed. For example, you can send emails in a background job to overcome temporary failures and guarantee that it eventually will be sent. That way users do not wait while sending emails.
Background jobs are persistent that means they will be re-tried and executed later even if your application crashes.
ABP provides an abstraction module and several implementations for background jobs. It has a built-in/default implementation as well as Hangfire and RabbitMQ integrations.
Abstraction Module
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Creating a Background Job
A background job is a class that implements the IBackgroundJob<TArgs> interface or derives from the BackgroundJob<TArgs> class. TArgs is a simple plain C# class to store the job data.
An example background job to send emails in background: