emqtt VS cppq

• High Performance
  eMQTT is designed for high performance and can handle millions of connections concurrently. It's optimized for both latency and throughput, making it ideal for large-scale IoT applications.
• Scalability
  eMQTT can scale horizontally by adding more nodes to the cluster. This makes it easy to adjust the system according to the growing number of devices and data throughput requirements.
• Extensibility
  eMQTT supports various plugins and extensions that can be used to add additional functionalities or integrate with other systems.
• Rich Feature Set
  It offers features like TLS/SSL encryption, authentication, authorization, message logging, and various MQTT protocol extensions, providing a comprehensive solution for messaging needs.
• Open Source
  As an open-source project, eMQTT allows for greater transparency, customizability, and community support. Developers can adapt the code to better fit their specific requirements.
• Cross-Platform Support
  It supports multiple operating systems including Linux, Mac OS, and Windows, thus offering flexibility in diverse deployment environments.
• Multiple Protocols
  In addition to MQTT, eMQTT supports other protocols such as MQTT-SN, CoAP, and WebSocket, making it versatile for various IoT scenarios.
• Good Documentation
  eMQTT comes with extensive documentation that helps developers understand its features and how to implement them effectively.

Possible disadvantages

• Complexity
  Due to its rich feature set and extensibility, eMQTT can be complex to configure and manage, especially for users who are new to MQTT brokers.
• Resource Intensive
  Being designed for high performance and scalability, eMQTT can be resource-intensive, requiring substantial CPU and memory, which might not be suitable for resource-constrained environments.
• Learning Curve
  The myriad features and configurations can present a steep learning curve for new users or those not familiar with MQTT or distributed systems.
• Community and Support
  While it has a growing community, it might not have as extensive support or as large a user base as some other established MQTT brokers, potentially resulting in slower resolutions for community-driven support.
• Licensing Costs
  While eMQTT is open-source, some advanced features and extended support might require a commercial license, which could be a drawback for smaller organizations with limited budgets.
• Maintenance
  Managing and maintaining a scalable eMQTT cluster might require specialized skills and ongoing effort, which can increase the overall operational costs.

• Lightweight C++ implementation
  cppq is written in modern C++ and designed to be a minimal, efficient task queue library, making it a good fit for performance-sensitive applications where the overhead of scripting language runtimes is undesirable.
• Redis-backed reliability
  Built on top of Redis as the message broker, cppq benefits from Redis's persistence, atomic operations, and wide adoption, giving the queue system durability and the ability to survive process restarts.
• Inspired by proven design (asynq)
  The library's architecture mirrors the popular Go asynq task queue, so it inherits a well-thought-out API design for task enqueueing, retries, and worker processing patterns that have already been validated in production systems.
• Native integration for C++ projects
  For teams already working in a C++ codebase, cppq allows adding background job processing without needing to introduce a separate service written in another language (like Go or Python), simplifying the technology stack.
• Open source and inspectable
  Being open source on GitHub, developers can review the source code, modify it for custom needs, and contribute improvements, which offers transparency not available with closed-source queueing solutions.

Possible disadvantages

• Limited maturity and battle-testing
  Compared to established task queue libraries like Sidekiq, Celery, or asynq itself, cppq is a newer and smaller project with less real-world production usage, which may translate into undiscovered bugs or edge cases.
• Smaller community and ecosystem
  Because it has far fewer users and contributors than mainstream task queue systems, finding community support, third-party tutorials, or pre-built integrations is more difficult.
• Documentation gaps
  As a smaller project, cppq may have less comprehensive documentation compared to major task queue frameworks, requiring developers to read source code directly to understand advanced features or edge-case behaviors.
• C++ build and dependency complexity
  Using cppq requires managing C++ build toolchains and dependencies (such as a Redis client library), which can be more cumbersome than installing a package via pip or npm in other ecosystems.
• Fewer built-in features and tooling
  cppq likely lacks the extensive ecosystem tooling of more mature queues, such as web-based monitoring dashboards, extensive metrics/observability integrations, or advanced scheduling features found in more established solutions.

• Measuring Crowd Engagement with an MQTT-based IoT App

  Before applying our application to the cluster, we need to make sure there is a MQTT broker running that can be reached from within the cluster. For simplicity, we are deploying an EMQX MQTT broker as a Pod in the cluster along with a... - Source: dev.to / almost 2 years ago

• Simplest Guide to DIY Your Own LLM Toy in 2024

  EMQX (optional): Open-source MQTT broker for IoT, IIoT, and connected vehicles. Used for managing your toys. - Source: dev.to / over 2 years ago

• All right, which one of you did this?

  I do know a real world use for Erlang (it also surprised me when I investigated about it), but two of the biggest mqtt brokers are coded in erlang: emqx, vernemq. Source: over 3 years ago

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Tracking cppq since Nov 2022.