This is a sixth part of a series:

Parts 3, 4, and 5 covered the BackgroundJob class responsible for enqueuing single jobs (fire and forget). This post will cover RecurringJob class exposing API for recurring jobs (as the name suggests).

Recurring job

Before we go into the API, let’s take a look what is a recurring job in Hangfire. Recurring job is a timer that enqueues a job at specific time intervals defined with a cron expression. What is important is, that it does not execute the job. Only enqueues an ordinary Hangfire job. This implementation is very elegant, but it also means that if the queue is full the job will have to wait for its turn. So there is no guarantee about the time it will actually execute.

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This is a fifth part of a series:

Part 3 covered almost all functions in BackgroundJob class except for ContinueWith functions family. So here we go :)

The fact that it has the same name as a System.Threading.Tasks.Task function is not without a coincidence, or at least I hope so. This method allows chaining jobs where one will be enqueued when the previous finishes. To repeat - the job won’t be executed, but enqueued. So it will go at the end of the queue. So lets look at the function and overrides signature:

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This is the fourth part of a series discussing job scheduling and Hangfire details:

This part will cover few small topics:

  • dashboard
  • retries
  • more technical part of the Hangfire.BackgroundJob class API
  • job cancellation
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This is the third part of a series discussing job scheduling and Hangfire details:

This part will focus on the basic scheduling API of Hangfire. The easiest way to create a fire and forget job is by using the classHangfire.BackgroundJob and its minimalistic (and this is a complement) API of static functions:

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This is the second part of a series discussing job scheduling and Hangfire details:

In the previous post I’ve written about why I think the ability to schedule tasks for later execution is a fundamental technical feature, but also a must have from business’ point of view. We are passed the whys, so let’s get to the hows. The answer is simple - Hangfire. I’ve written about it here, here and here, so yeah, you guessed it, I like it. Hangfire is an amazing library. It has shown it’s value in my pet project (cookit.pl) and in a huge ERP system that we are building at work, where we replaced Quartz.NET with it and never looked back.

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