A complete reference of EMQX features. From device connectivity to AI processing, explore everything the platform offers.
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Sensor network protocol gateway for resource-constrained devices
Constrained Application Protocol gateway with UDP/DTLS support
Lightweight M2M protocol for IoT device management
Streaming Text Oriented Messaging Protocol support
Open Charge Point Protocol for EV charging stations
Chinese EV remote monitoring data exchange protocol
Chinese road transport vehicle positioning protocol
NATS messaging system protocol gateway
Custom protocol extension framework
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Server stores the last message for each topic
Automatic message delivery on abnormal client disconnect
Subscribe to multiple topics using + and # wildcards
Exclusive topic subscription ensuring single subscriber
Schedule delayed message delivery
Automatic topic subscription on client connect
Dynamic message topic rewriting
Load-balanced message consumption across multiple subscribers
Large file chunked transfer over MQTT
Dynamic client custom attributes for flexible data handling
Password authentication with multiple backend storage
JSON Web Token based authentication
TLS client certificate authentication
LDAP/Active Directory authentication integration
Salted Challenge Response Authentication Mechanism
Enterprise Kerberos authentication
External authentication via HTTP API
MySQL/PostgreSQL/MongoDB/Redis auth backends
File and database-based access control lists
End-to-end TLS encrypted transport
Certificate revocation list and online certificate status
Pre-shared key authentication
Client/IP/user blacklist management
Connection flapping detection to prevent resource exhaustion
Connectors
Message Streaming (10)
HTTP / Webhook (1)
Databases (20)
Data Analytics (6)
Object Storage (4)
Multi-node high availability cluster deployment
Manual and auto clustering with DNS, etcd, K8s discovery
RocksDB-based session persistence
Geo-distributed multi-cluster linking
Node evacuation for rolling upgrades
Nginx/HAProxy load balancer configuration
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Runtime hot configuration updates
Namespace-based multi-tenant isolation
Connection and message rate limiting
Commercial license management
Data backup and restore
Operation audit logging
LDAP/SAML/OIDC single sign-on
Multi-factor authentication
Runtime code upgrade without downtime
Real-time performance metrics and statistics
Prometheus metrics export
Datadog APM integration
Distributed tracing, metrics and logs export
CPU/memory/rule engine alerts
Structured log collection and configuration
Per-topic message statistics
Slow subscriber detection and statistics
Dynamic log tracing for debugging
$SYS system topic monitoring
MQTT Client SDK (5)
MCP over MQTT SDK (6)
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