Change Worker Count at runtime

unos_baghaii · May 13, 2015, 9:07am

Hi

Is it possibe to change the WorkerCount of a queue at runtime ?
does it have any side effect if I change the WorkerCount in HangFire.Server table ?
or when a server starts it sets the worker for entire life of the server ?

yngndrw · May 13, 2015, 11:28am

Workers are created at startup so changing that value won’t help:

github.com

HangfireIO/Hangfire/blob/master/src/Hangfire.Core/BackgroundJobServer.cs#L147


    Logger.Debug("Hangfire Server is stopping...");
    _processingServer.SendStop();
}


public void Dispose()
{
    _processingServer.Dispose();
    Logger.Info("Hangfire Server stopped.");
}


private IEnumerable<IBackgroundProcess> GetRequiredProcesses(
    [NotNull] IJobFilterProvider filterProvider,
    [NotNull] JobActivator activator,
    [CanBeNull] IBackgroundJobFactory factory,
    [CanBeNull] IBackgroundJobPerformer performer,
    [CanBeNull] IBackgroundJobStateChanger stateChanger)
{
    var processes = new List<IBackgroundProcess>();
    
    factory = factory ?? new BackgroundJobFactory(filterProvider);
    performer = performer ?? new BackgroundJobPerformer(filterProvider, activator);

You could re-create the BackgroundJobServer if you need to change the number of workers, but I’d question why you need to change this number at runtime ?

cbgowda · February 18, 2016, 6:13pm

I am in need of updating the count at run time, is there any way to increase/decrease the count?

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Change Worker Count at runtime

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