Soenneker.ServiceBus.Sender 4.0.2502

Soenneker.ServiceBus.Sender

Creates and caches one Azure ServiceBusSender per queue while reusing the shared top-level ServiceBusClient.

Installation

dotnet add package Soenneker.ServiceBus.Sender

Configuration and registration

Provide Azure:ServiceBus:ConnectionString, then choose the sender-cache lifetime:

using Soenneker.ServiceBus.Sender.Registrars;

services.AddServiceBusSenderUtilAsScoped();

The scoped registration intentionally keeps the queue, administration, and top-level client utilities singleton. Disposing a scope releases that scope's cached senders while the shared ServiceBusClient remains available. Use AddServiceBusSenderUtilAsSingleton() when sender instances should remain cached for the entire application lifetime.

Because the first Get for a queue calls CreateQueueIfDoesNotExist, the connection-string credential needs queue-management permission in addition to send permission.

Send to a queue

using Azure.Messaging.ServiceBus;
using Soenneker.ServiceBus.Sender.Abstract;

public sealed class OrderPublisher(IServiceBusSenderUtil senderUtil)
{
    public async Task Send(
        BinaryData body,
        CancellationToken cancellationToken)
    {
        ServiceBusSender sender =
            await senderUtil.Get("orders", cancellationToken);

        var message = new ServiceBusMessage(body)
        {
            ContentType = "application/json",
            MessageId = Guid.NewGuid().ToString("N")
        };

        message.ApplicationProperties["type"] = "order.created.v1";

        await sender.SendMessageAsync(message, cancellationToken);
    }
}

The first request for an exact queue-name key ensures the queue exists, gets the shared client, and creates a sender. Later requests for that key reuse the same sender. Different queue-name strings receive different cached senders.

The utility does not build message bodies, set broker properties, batch messages, schedule delivery, or retry application-level failures. Use Soenneker.ServiceBus.Message when its message-envelope convention fits your producer.

Do not dispose a sender returned by Get; the sender utility owns it. Disposing the scoped or singleton utility disposes every sender it created but does not dispose the shared top-level Service Bus client.