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functions-bindings-rabbitmq.md

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title Azure RabbitMQ bindings for Azure Functions
description Learn to send Azure RabbitMQ triggers and bindings in Azure Functions.
ms.topic reference
ms.date 08/20/2025
ms.custom devx-track-extended-java, devx-track-js, devx-track-python
zone_pivot_groups programming-languages-set-functions-lang-workers

RabbitMQ bindings for Azure Functions overview

Azure Functions integrates with RabbitMQ via triggers and bindings.

[!INCLUDE functions-rabbitmq-plans-support-note]

The Azure Functions RabbitMQ extension allows you to send and receive messages using the RabbitMQ API with Functions.

Action Type
Run a function when a RabbitMQ message comes through the queue Trigger
Send RabbitMQ messages Output binding

Prerequisites

Before working with the RabbitMQ extension, you must set up your RabbitMQ endpoint. To learn more about RabbitMQ, see the getting started page.

::: zone pivot="programming-language-csharp"

Install extension

The extension NuGet package you install depends on the C# mode you're using in your function app:

Isolated worker model

Functions execute in an isolated C# worker process. To learn more, see Guide for running C# Azure Functions in an isolated worker process.

Add the extension to your project by installing this NuGet package.

In-process model

[!INCLUDE functions-in-process-model-retirement-note]

Functions execute in the same process as the Functions host. To learn more, see Develop C# class library functions using Azure Functions.

Add the extension to your project by installing this NuGet package.

::: zone-end
::: zone pivot="programming-language-javascript,programming-language-python,programming-language-java,programming-language-powershell"
[!INCLUDE functions-install-extension-bundle] ::: zone-end

host.json settings

[!INCLUDE functions-host-json-section-intro]

{
    "version": "2.0",
    "extensions": {
        "rabbitMQ": {
            "prefetchCount": 100,
            "queueName": "queue",
            "connectionString": "%<MyConnectionAppSetting>%",
            "port": 10
        }
    }
}
Property Default Description
prefetchCount 30 Gets or sets the number of messages that the message receiver can simultaneously request and is cached.
queueName n/a Name of the queue to receive messages from.
connectionString n/a The app setting that contains the RabbitMQ message queue connection string.
port 0 (ignored if using connectionString) Gets or sets the Port used. Defaults to 0, which points to rabbitmq client's default port setting: 5672.

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