Hangfire recurring tasks under minute

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Not sure when this became supported but tried this in ASP.NET Core 2.0 with Hangfire 1.7.0. The following code schedules a job every 20 seconds:

RecurringJob.AddOrUpdate<SomeJob>(
    x => x.DoWork(),
    "*/20 * * * * *");

If I am not mistaken 6 tokens (as opposed to standard 5 tokens) is supported due to Hangfire use of NCrontab which allows cron expressions with 6 tokens (second granularity instead of minute granularity).

Hangfire dashboard also nicely shows the small time interval between runs:

Hangfire dashboard

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