RobustMQ MQTT Overview
Introduction
RobustMQ MQTT is a complete implementation of the MQTT protocol by RobustMQ, providing high-performance and highly available message delivery services. As an enterprise-grade MQTT message broker, RobustMQ MQTT is fully compatible with MQTT 3.1, 3.1.1, and 5.0 protocol standards, ensuring seamless integration with existing MQTT ecosystems.
Core Advantages
- 100% Protocol Compatibility: Fully supports standard MQTT protocols, compatible with all MQTT clients, SDKs, and tools
- High-Performance Architecture: Supports millions of single-machine connections and billions of cluster connections
- Enterprise Features: Provides enterprise-grade features such as cluster deployment, high availability, and security authentication
- Complete Functionality: Covers all core MQTT protocol features, aligned with mainstream MQTT broker functionality
- Cloud-Native Support: Supports Kubernetes deployment and cloud-native architecture
Core Feature Set
Protocol Support
| Feature | Description | Support Status |
|---|---|---|
| MQTT Protocol | Complete support for all MQTT 3.1/3.1.1/5.0 features | ✅ Fully Supported |
| Network Protocols | Supports TCP, SSL, WebSocket, WebSockets, QUIC protocol access | ✅ Fully Supported |
| Publish/Subscribe | Standard MQTT publish-subscribe pattern | ✅ Fully Supported |
| QoS Levels | Supports QoS 0, 1, 2 levels | ✅ Fully Supported |
| Wildcard Subscription | Supports single-level wildcard + and multi-level wildcard # | ✅ Fully Supported |
MQTT 5.0 Features
| Feature | Description | Support Status |
|---|---|---|
| User Properties | User Properties support | ✅ Fully Supported |
| Topic Alias | Topic Alias support | ✅ Fully Supported |
| Payload Format Indicator | Payload Format Indicator & Content Type | ✅ Fully Supported |
| Shared Subscriptions | Shared Subscriptions | ✅ Fully Supported |
| Subscription Options | Subscription Options | ✅ Fully Supported |
| Subscription Identifier | Subscription Identifier | ✅ Fully Supported |
| Message Expiry Interval | Message Expiry Interval | ✅ Fully Supported |
| Maximum Packet Size | Maximum Packet Size | ✅ Fully Supported |
| Request/Response | Request/Response pattern | ✅ Fully Supported |
Advanced Features
| Feature | Description | Support Status |
|---|---|---|
| Session Management | Supports Session persistence and expiration | ✅ Fully Supported |
| Retained Messages | Retained Messages | ✅ Fully Supported |
| Will Messages | Will Messages | ✅ Fully Supported |
| Exclusive Subscriptions | Exclusive Subscriptions | ✅ Fully Supported |
| Delayed Publishing | Delayed Publishing | ✅ Fully Supported |
| Auto Subscription | Auto Subscription | ✅ Fully Supported |
| Topic Rewrite | Topic Rewrite | ✅ Fully Supported |
| Flapping Detection | Connection flapping detection and protection | ✅ Fully Supported |
| System Topics | System Topics | ✅ Fully Supported |
| Slow Subscription Statistics | Slow Subscription Statistics | ✅ Fully Supported |
Security & Authentication
| Feature | Description | Support Status |
|---|---|---|
| Password Authentication | Supports built-in database, MySQL, Redis password authentication | ✅ Fully Supported |
| Access Control | Supports built-in database, MySQL, Redis authorization implementation | ✅ Fully Supported |
| Blacklist | Client blacklist management | ✅ Fully Supported |
Data Integration & Storage
| Feature | Description | Support Status |
|---|---|---|
| Data Integration | Supports File, Kafka bridge connectors | ✅ Fully Supported |
| Schema Support | Supports JSON, Protobuf, AVRO formats | ✅ Fully Supported |
| Offline Messages | Supports storage engines based on Memory, RocksDB, MySQL, Journal Engine, S3, Minio | ✅ Fully Supported |
| Message Storage Strategy | Messages are automatically discarded when Topic has no subscribers | ✅ Fully Supported |
Monitoring & Operations
| Feature | Description | Support Status |
|---|---|---|
| Metrics Monitoring | Supports cluster/Topic dimension monitoring metrics | ✅ Fully Supported |
| Prometheus Integration | Supports Prometheus metrics export | ✅ Fully Supported |
| Distributed Tracing | Supports distributed tracing | ✅ Fully Supported |
Deployment & Scaling
| Feature | Description | Support Status |
|---|---|---|
| Cluster Deployment | Stateless Broker node deployment, single cluster supports hundreds to thousands of Broker nodes | ✅ Fully Supported |
| Single Machine Max Connections | Single machine can handle millions of connections | ✅ Fully Supported |
| Cluster Max Connections | Cluster can handle billions of connections | ✅ Fully Supported |
| Cloud-Native Support | Supports Kubernetes deployment and cloud-native architecture | ✅ Fully Supported |
Feature Comparison with EMQX
Core Capability Comparison
| Feature Category | Feature | EMQX | RobustMQ MQTT | Notes |
|---|---|---|---|---|
| MQTT Protocol | MQTT 5.0 Broker | ✅ Supported | ✅ Supported | Fully Compatible |
| MQTT over QUIC | ✅ Supported | ✅ Supported | Fully Compatible | |
| MQTT Extensions | ✅ Supported | ✅ Supported | Fully Compatible | |
| Advanced Features | Multi-Protocol Gateway | ✅ Supported | ❌ Not Supported | Planned Support |
| Multi-Tenancy | ✅ Supported | ❌ Not Supported | Planned Support | |
| Cluster Connection | ✅ Supported | ❌ Not Supported | Planned Support | |
| Rule Engine | ✅ Supported | ❌ Not Supported | Planned Support | |
| Flow Designer | ✅ Supported | ❌ Not Supported | Planned Support | |
| File Transfer | ✅ Supported | ❌ Not Supported | Planned Support | |
| Edge Computing | ✅ Supported | ❌ Not Supported | Planned Support | |
| Data Management | Event History | ✅ Supported | ✅ Supported | Fully Compatible |
| Data Persistence | ✅ Supported | ✅ Supported | Fully Compatible | |
| Schema Registry | ✅ Supported | ✅ Supported | Fully Compatible | |
| Message Encoding/Decoding | ✅ Supported | ✅ Supported | Fully Compatible | |
| Message Validation | ✅ Supported | ✅ Supported | Fully Compatible | |
| Data Integration | Kafka Integration | ✅ Supported | ✅ Supported | Fully Compatible |
| Enterprise Data Integration | ✅ Supported (40+) | ✅ Supported (2+) | Continuously Expanding | |
| Operations & Monitoring | Troubleshooting | ✅ Supported | ✅ Supported | Fully Compatible |
| Cloud-Native & K8s | ✅ Supported | ✅ Supported | Fully Compatible |
Feature Coverage
- MQTT Core Features: 100% coverage
- Enterprise Features: 90% coverage
- Data Integration: Basic functionality covered, continuously expanding
- Advanced Features: Partial coverage, planned gradual support
Management Tools
Dashboard
RobustMQ Dashboard has completed support for RobustMQ MQTT protocol features, providing an intuitive web interface for managing and monitoring MQTT services.
Access URL: http://demo.robustmq.com/
Main Features:
- Client connection management
- Topic subscription monitoring
- Message traffic statistics
- System performance monitoring
- Configuration management
Command Line Tools
RobustMQ MQTT supports the robust-ctl mqtt command line tool, providing complete MQTT management functionality.
Main Features:
- Client management
- Topic management
- Message publishing/subscribing
- System status queries
- Configuration management
For detailed documentation, please refer to: robustmq-ctl mqtt
Quick Start
- Installation & Deployment: Refer to Installation & Deployment Guide
- Configuration Management: Refer to Configuration Documentation
- Client Connection: Refer to Client SDKs
- Feature Usage: Refer to detailed documentation for each feature module