rumqtt vs Mosquitto: which one should I use?

rumqtt is Rust-based and excels in performance and embeddability for Rust projects, but Mosquitto has a more mature ecosystem with MQTT 5 support and broader tooling. Choose rumqtt for Rust-centric, high-performance needs; Mosquitto for feature-rich, cross-language deployments.

How to set up TLS encryption in rumqttd?

TLS is supported in rumqttd via configuration in the rumqttd.toml file. You'll need to specify certificate and key paths, similar to other brokers, but detailed examples are sparse, so refer to the demo config or community resources for guidance.

Is rumqttd production-ready for large-scale IoT?

rumqttd is robust and performant for many use cases, but its lack of MQTT 5 and advanced features like clustering may make it less ideal for very large, distributed deployments compared to enterprise-grade brokers.

Can I use rumqttc with async/await in Rust?

Yes, rumqttc is designed to work with asynchronous Rust runtimes like tokio, but the README lacks extensive async examples, so you may need to consult the crate documentation or community forums for best practices.

How does rumqtt handle retained messages and last will?

rumqttd supports retained messages and last will testament as per MQTT 3.1.1, configurable through standard publish commands and broker settings, ensuring reliability in disconnection scenarios.

What are the performance benchmarks for rumqtt?

The README emphasizes performance but doesn't provide specific benchmarks. For real-world metrics, check community discussions or conduct tests, as rumqtt's Rust foundation likely offers low latency and high throughput in IoT contexts.

Open-Awesome

rumqtt

Apache-2.0Rustrumqttc-0.25.1

A set of Rust libraries implementing the MQTT standard, including a high-performance broker and an easy-to-use client.

GitHub

2.1k stars341 forks0 contributors

What is rumqtt?

rumqtt is an open-source set of libraries written in Rust that implements the MQTT protocol, providing both a high-performance broker and an easy-to-use client. It solves the need for reliable, efficient messaging in IoT and real-time systems by offering a robust, embeddable MQTT ecosystem.

Target Audience

Developers and engineers building IoT applications, real-time messaging systems, or embedded devices that require MQTT communication, particularly those working in Rust ecosystems.

Value Proposition

Developers choose rumqtt for its performance, simplicity, and robustness in implementing MQTT standards, along with the safety and concurrency benefits of Rust, making it a reliable choice for critical messaging infrastructure.

Overview

The MQTT ecosystem in rust

Use Cases

Best For

Building IoT device communication backends
Self-hosting a high-performance MQTT broker
Embedding an MQTT broker within Rust applications
Developing real-time messaging systems in Rust
Implementing MQTT 3.1.1 and MQTT 5 clients
Deploying MQTT infrastructure with Docker containers

Not Ideal For

Projects requiring MQTT 5 broker features like shared subscriptions or message expiry
Enterprise environments needing advanced broker capabilities such as bridging, clustering, or web-based management interfaces
Teams heavily invested in non-Rust ecosystems who prefer client libraries in languages like Python or JavaScript for easier integration

Pros & Cons

Pros

High-Performance Broker

rumqttd is designed for performance with support for MQTT 3.1.1, QoS 0-2, and TLS, making it suitable for demanding IoT applications as highlighted in the README.

Easy Deployment Options

Offers multiple installation methods including Docker, Cargo, prebuilt binaries, and AUR, simplifying setup and self-hosting as detailed in the installation section.

Robust Client Library

rumqttc provides a high-level, easy-to-use MQTT client with support for both MQTT 3.1.1 and MQTT 5, reducing development overhead for Rust-based messaging systems.

Cons

Missing MQTT 5 Broker Support

The rumqttd broker explicitly lacks MQTT 5 implementation per the features list, limiting its use for applications needing modern protocol features like shared subscriptions or user properties.

Limited Ecosystem and Tooling

Compared to mature MQTT solutions like Mosquitto, rumqtt has fewer plugins, monitoring tools, or community integrations, which may require custom development for advanced use cases.

Rust-Centric Barrier

While the client is easy to use, the broker and libraries are Rust-focused, so non-Rust teams may face integration challenges or a steeper learning curve for embedding or extending functionality.

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