Configure cron job that is executing every 15 minutes on Hangfire

Question

I am using Hangfire and like the software very much! But one thing I am missing is how to add a recurring job that executes every few minutes (e.g. every 15 minutes). Is there a way to achieve this?

Japan

You can use this (cronmaker.com) to generate cron expressions. And then (as per the accepted answer) you can call RecurringJob.AddOrUpdate(() => Console.Write("Recurring"), cronText); – Dusty

Answer 1

Currently I am using this approach:

RecurringJob.AddOrUpdate(() => Console.Write("Recurring"), "*/15 * * * *");

And is working like a charm.

Reference to my question in Hangfire forums: http://discuss.hangfire.io/t/how-to-create-cron-job-that-is-executing-every-15-minutes/533

Japan

Thanks for sharing the solution. Didn't know Hangfire accepted those cron expressions. – Easterly

For 30 min = "*/30 * * * *" ? – Geehan

Yes, */30 * * * * will be for every 30 minutes – Japan

Unfortunately if you want to stagger your tasks i.e. not have them all run at once at 00:00, 00:15, 00:30 using this method it will not work. I still havent found a way around that – Feverfew

Can you please help me with this question :#48423131 – Sgraffito

How can I specify “every 10 seconds”? – Deepfry

Answer 2

We can also use the following code line to schedule job for every 15 minutes.

RecurringJob.AddOrUpdate(() => Console.Write("Recurring"), Cron.MinuteInterval(15));

Larocca

MinuteInterval will be removed in 2.0.0 – Ken

how set the start time, for example, 8 am and schedule job for every 15 minutes? – Peebles

Answer 3

Looking at Hangfire.Cron class I don't know if it's possible.

A workaround would be to create four different schedules i.e:

RecurringJob.AddOrUpdate(
    () => Console.WriteLine("Transparent!"), 
    Cron.Hourly(0));

RecurringJob.AddOrUpdate(
    () => Console.WriteLine("Transparent!"), 
    Cron.Hourly(15));

RecurringJob.AddOrUpdate(
    () => Console.WriteLine("Transparent!"), 
    Cron.Hourly(30));

RecurringJob.AddOrUpdate(
    () => Console.WriteLine("Transparent!"), 
    Cron.Hourly(45));

Easterly

Answer 4

try the official tool for CronExpression:

https://crontab.guru/#*/15_*_*_*_*

Sinistral