Why are the Interval functions being removed from Cron.cs?

[RichardNobel]

Why are the MinuteInterval, HourInterval, DayInterval and MonthInterval functions considered Obsolete?

"Please use Cron expressions instead. Will be removed in 2.0.0"

In my opinion, it makes the code easier to read with MinuteInterval(15) instead of a string notation "*/15 * * * * ".

Of course I can copy these (or create similar) functions in my own project/library.

But is there a specific reason why they need to be removed from Hangfire.Core?

[BenJenkinson]

Hi @RichardNobel,

Issue #1041 describes the reason they were marked as obsolete. I've quoted it below:

Neither of these methods works correctly, when the specified interval is not a multiple of the corresponding field's range length (max-min). For example, when we are using Cron.HourInterval(10), we will not get the documented every 10 hours semantic, instead we'll get the following occurrences:

Nov 6, 00:00
Nov 6, 10:00
Nov 6, 20:00 
Nov 7, 00:00

Time interval between the last two entries is only 4 hours and violates what's written in the method's name and in its comments. Cron expressions don't allow to specify "every N" recurring intervals in general, and other methods should be used instead of confusing methods.