Inbox Options

var configuration = 
    new ConfigurationBuilder()
        .AddJsonFile("appsettings.json").Build();

services.AddServiceBus(builder => 
{
    builder.Options.Inbox = new InboxOptions
    {
        WorkQueueUri = "queue://configuration/inbox-work",
        DeferredQueueUri = "queue://configuration/inbox-deferred",
        ErrorQueueUri = "queue://configuration/inbox-error",
        ThreadCount = 25,
        DurationToSleepWhenIdle = new List<TimeSpan>
        {
            TimeSpan.FromMilliseconds(250),
            TimeSpan.FromSeconds(10),
            TimeSpan.FromSeconds(30)
        },
        DurationToIgnoreOnFailure = new List<TimeSpan>
        {
            TimeSpan.FromSeconds(10),
            TimeSpan.FromSeconds(30)
        },
        MaximumFailureCount = 2,
        DeferredMessageProcessorResetInterval = TimeSpan.FromMinutes(5),
        DeferredMessageProcessorWaitInterval = TimeSpan.FromSeconds(5)
    };
    
    // or bind from configuration
    configuration
        .GetSection(ServiceBusOptions.SectionName)
        .Bind(builder.Options);
})

The default JSON settings structure is as follows:

{
  "Shuttle": {
    "ServiceBus": {
      "Inbox": {
        "WorkQueueUri": "queue://configuration/inbox-work",
        "DeferredQueueUri": "queue://configuration/inbox-deferred",
        "ErrorQueueUri": "queue://configuration/inbox-error",
        "ThreadCount": 25,
        "DurationToSleepWhenIdle": [
          "00:00:00.250",
          "00:00:10",
          "00:00:30"
        ],
        "DurationToIgnoreOnFailure": [
          "00:30:00",
          "01:00:00"
        ],
        "MaximumFailureCount": 25,
        "DeferredMessageProcessorResetInterval": "00:05:00",
        "DeferredMessageProcessorWaitInterval": "00:00:05"
      }
    }
  }
}

Options

Option	Default	Description
ThreadCount	5	The number of worker threads that will service the work queue. The deferred queue will always be serviced by only 1 thread.
DurationToSleepWhenIdle	250ms*4,500ms*2,1s,5s	A list of TimeSpan instances. Each successive idle processing run will move to the next entry in the list; resets as soon as a message is processed.
DurationToIgnoreOnFailure	30s,2m,5m	A list of TimeSpan instances. Each failure will move to the next entry.
MaximumFailureCount	5	The maximum number of failures that are retried before the message is moved to the error queue if there is one and the queue is not a stream; else the message is released.
DeferredMessageProcessorResetInterval	00:01:00	The duration to wait before restarting the DeferredMessageProcessor once it has halted.
DeferredMessageProcessorWaitInterval	00:00:01	The duration to wait when the DeferredMessageProcessor is waiting to perform the next run.