Changelog

Changelog

smart-mqtt broker v1.5.4（2026-03-31）

• Advanced Authentication Plugin: Added advanced-auth-plugin, supporting Redis and HTTP authentication chains, more suitable for enterprise-level device access scenarios
• Authentication Chain Mechanism: Supports “Redis first, HTTP fallback” progressive authentication architecture, facilitating smooth integration with existing business systems
• Stability Enhancement: In scenarios with concentrated device reconnections within a short time, the authentication chain is more stable, reducing service jitter caused by authentication pressure
• Redis Ecosystem Extension: Based on smartboot’s continuous accumulation in the Redis direction, further strengthening integration capabilities in authentication scenarios

Release Details: smart-mqtt v1.5.4 Released: From Basic Authentication to Enterprise-Ready Authentication System

smart-mqtt broker v1.5.3（2026-03-17）

• Intelligent Push Model: Real-time awareness of connection pressure, automatically delaying message push in high-load scenarios to alleviate congestion risks
• Graceful Plugin Unregistration: Optimized plugin lifecycle management, more smoothly releasing connections, sessions, and related resources during plugin uninstallation
• Real-time Log Output: Plugin log real-time push based on SSE, facilitating quick positioning of runtime issues
• AI Agent Enhancement: Added WebPageReaderTool tool, improving the intelligent assistant’s ability to read and answer official documentation

Release Details: smart-mqtt v1.5.3 Released, Enhanced Observability

smart-mqtt broker v1.5.2（2026-03-04）

• AI Agent Intelligent Assistant: Integrated Feat AI Agent capabilities, injecting intelligent interactive experience into the enterprise edition, supporting 24/7 technical Q&A
• Stress Testing Module Pluginization: Refactored the original standalone smart-mqtt-bench module into a bench-plugin plugin, ready to use out of the box
• llms.txt Specification: Following the llms.txt standard, providing optimized content format for large models

Release Details: smart-mqtt v1.5.2 Released, How Individual Developers Can Leverage 10x Product Value with 1/10 Investment

smart-mqtt broker v1.5.1（2026-02-08）

• Asynchronous Event Bus: Introduced asynchronous features, significantly improving concurrent processing capabilities in third-party connection authentication mode
• Schema Configuration Specification: Plugin interface added Schema specification, implementing adaptive rendering of configuration pages
• Backend UI Comprehensive Upgrade: Adopted new frontend framework refactoring, package size reduced to 9.89MB, perfectly adapted for mobile devices
• Model Ark Listing: Officially listed on Model Ark application marketplace, providing more convenient purchase channels

Release Details: smart-mqtt v1.5.1 Released, One-Person Product is More Reliable Than One-Person Company

smart-mqtt broker v1.5.0（2025-11-2）

• Enterprise Edition Extreme Slimming: Complete software package reduced from 29.3MB to 12.6MB, a reduction of about 57%
• Redis Bridge Plugin Optimization: Self-developed Redis client framework Redisun, reducing redis bridge plugin from 15.5MB to 81KB
• Bug Fixes: Resolved the issue where wildcard subscriptions did not take effect in certain scenarios
• smart-socket Upgrade to 1.7.5: Underlying communication framework update, enhancing network communication stability

Release Details: smart-mqtt v1.5.0: Just by Eliminating Netty, Enterprise Edition Package Slimmed by 57%

smart-mqtt broker v1.4.0（2025-10-15）

• Distribution Package Extreme Slimming: Open source edition distribution package size reduced from 3MB to less than 800KB, a reduction of about 73%
• Configuration Method Comprehensive Innovation: Deprecated traditional YAML configuration, embracing cloud-native standard system properties and environment variables
• Performance Improvement: QoS0 throughput reached 10M/second
• Memory Optimization: Deep memory optimization for massive Topic and subscription relationship scenarios
• Cluster Plugin Optimization: Reconnection logic stability improvement
• Enterprise Plugin Enhancement: Added fault self-healing mechanism, optimized storage structure

Release Details: smart-mqtt v1.4.0 Extreme Slimming, Carrying 10M/Second Message Flood with Less Than 800KB Package Size

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smart-mqtt broker v1.3.0（2025-07-16）

Release Details: Lightweight MQTT Broker Evolution! smart-mqtt v1.3.0 Supports Multi-Node Cluster Deployment

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smart-mqtt broker v1.2.0（2025-06-18）

Release Details: After 3 Million Reconnection Stress Tests, smart-mqtt v1.2.0 Proves Its Stability!

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smart-mqtt broker v1.1.0（2025-04-30）

• Released smart-mqtt plugin development specification component: smart-mqtt-plugin-spec
• Released smart-mqtt plugin local runtime maven plugin, meeting local development and debugging needs
• Completed smart-mqtt-broker plugin-style runtime environment transformation
• Released plugin: simple-auth-plugin, a simple MQTT authentication plugin providing basic username/password authentication functionality
• Released plugin: redis-bridge-plugin, a bridge plugin for MQTT message and Redis integration
• Released plugin: websocket-plugin, allowing clients to communicate via WebSocket connection for MQTT
• Released plugin: memory-session-plugin, providing memory-based session state management functionality for MQTT broker
• smart-mqtt-broker removed feat dependency, streamlined distribution package size
• smart-socket upgraded to 1.5.60
• fastjson2 upgraded to 2.0.57
• feat upgraded to 0.8.9

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smart-mqtt broker v1.0.0（2025-04-20）

Release Details: https://mp.weixin.qq.com/s/xsv_l9azTIQ4a1vVEucH5g

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smart-mqtt broker v0.42（2025-04-13）

1. Improved message queue class structure design, streamlined memory overhead
2. Refactored message push related interface design
3. Added extensive code comments
4. feat upgraded to v0.8.3
5. smart-socket upgraded to v1.5.58

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smart-mqtt broker v0.41（2025-02-26）

1. Open sourced stress testing module: smart-mqtt-bench
2. Open sourced enterprise edition backend module: smart-mqtt-plugin-enterprise
3. BrokerConfigure renamed to: Options
4. MqttClientConfigure renamed to: Options
5. Fixed shared subscription failure issue in specific scenarios
6. Refactored MQTT Client interface design
7. Deprecated interface: BrokerContext@bundle
8. Deprecated interface: BrokerContext@getBundle

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smart-mqtt broker v0.40（2024-12-06）

1. Optimized message push model, improved communication performance
2. Added message queue historical data cleanup function, saving server memory overhead
3. Added message push rate indicator detection
4. Upgraded smart-socket, enabled flexible memory pool model
5. Container environment supports timezone setting, default: Shanghai
6. Fixed null pointer issues in certain scenarios
7. Database table: connection added index configuration

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smart-mqtt broker v0.37（2024-04-06）

1. Adopted more efficient encoding/decoding algorithms, TPS increased to 7.9M/second
2. Refactored decoding algorithm, improved code readability
3. Optimized message retransmission implementation mechanism
4. Added unit tests

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smart-mqtt broker v0.36（2024-03-07）

1. Reduced console metric monitoring print frequency
2. Added shared subscription feature
3. Adjusted Topic encoding/decoding algorithm, improved performance to 7M/second

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smart-mqtt broker v0.35（2024-01-28）

1. Optimized message bus Consumer interface design
2. Temporary event types automatically destroy subscribers after execution
3. Improved event bus execution performance
4. BrokerTopic added availability state quantity
5. Added will message configuration legality check
6. Improved communication performance
7. Added new version detection function, timely access to latest updates
8. smart-socket upgraded to 1.5.41
9. smart-http upgraded to 1.3.8

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Historical Versions

Click to view earlier versions

v0.34（2023-12-16）

Community Edition

1. Introduced weak time precision to improve communication performance
2. Removed unused event types: MESSAGE_BUS_CONSUMED
3. Refactored message push model, simplified code complexity
4. Fixed packetId decoding algorithm bug introduced in v0.33

Enterprise Edition

1. Optimized memory usage rate statistics indicator
2. Added client kick offline function
3. Optimized metric statistics interface
4. Upgraded opentiny to 3.12.0

v0.33（2023-12-03）

Community Edition

1. Optimized message bus design
2. Removed unused event types: OPEN_API_STARTED、CONNACK、NOTIFY_TOPIC_PUSH
3. Optimized MQTT5 specification implementation for Disconnect
4. Adopted bit operation to optimize protocol encoding/decoding algorithm
5. Reduced communication memory overhead
6. Upgraded smart-socket to 1.5.39

Enterprise Edition

1. Optimized metric display time formatting effect
2. Fixed system parameter setting cannot be empty issue
3. Supported configurable display of dashboard metric items
4. Upgraded smart-http to 1.3.6

v0.32（2023-11-12）

1. Optimized Plugin interface design
2. Refactored message queue
3. Provided graceful shutdown capability
4. Improved mqtt client service stability
5. Improved connection authentication function
6. restapi enabled asynchronous interface function
7. Optimized enterprise management backend topic subscription retrieval function
8. Provided cluster demo environment one-click deployment capability
9. Enterprise management backend added system parameter configuration function
10. Upgraded smart-http to 1.3.5
11. Upgraded smart-socket to v1.5.36

v0.1 ~ v0.31

For more historical version information, please visit Gitee Releases.

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Version Policy

smart-mqtt adopts Semantic Versioning (SemVer):

• Major version: Major architectural changes
• Minor version: Incompatible API modifications
• Patch version: Downward compatible bug fixes or feature additions