A pure Java MQTT Stack for IoT
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MQTT is by far the most popular Internet of Things protocol used in the largest professional IoT deployments worldwide. The protocol is so simple and versatile, that it can be used for private home automation projects as well as ultra-secure and highly scalable enterprise installations. This talk will show how a pure Java and open source technology stack can be used for IoT devices as well as backend applications for building next-generation IoT projects.
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A pure Java MQTT Stack for IoT
- 1. A Pure Java MQTT Stack IoT at scale with open source technologies Dominik Obermaier| CTO @ HiveMQ
- 3. Numberofusersinmillions PEOPLE ON THE INTERNET
- 4. Source IHS © 2016 IHS DEVICES ON THE INTERNET
- 5. Key Industry Trend: IoT & Connectivity
- 6. Introduction • HiveMQ CTO • Strong background in distributed and large scale systems architecture • OASIS MQTT TC Member • Author of “The Technical Foundations of IoT” • Conference Speaker • Program committee member for German and international IoT conferences Dominik Obermaier @dobermai
- 7. IoT Challenges • Unreliable communication channels (e.g. mobile) • Constrained Devices • Low Bandwidth and High Latency environments • Bi-directional communication required • Security • Instantaneous data exchange !7
- 9. What is MQTT • Most popular IoT Messaging Protocol • Minimal Overhead • Publish / Subscribe • Easy • Binary • Data Agnostic • Designed for reliable communication over unreliable channels • ISO Standard !9
- 10. Use Cases • Push Communication • Unreliable communication channels (e.g. mobile) • Constrained Devices • Low Bandwidth and High Latency environments • Communication from backend to IoT device • Lightweight backen communication !10
- 12. Source: https://iot.eclipse.org/resources/iot-developer-survey/iot-developer-survey-2019.pdf; 1717 participants
- 13. Source: https://iot.eclipse.org/resources/iot-developer-survey/iot-developer-survey-2019.pdf; 1717 participants
- 14. Source: https://iot.eclipse.org/resources/iot-developer-survey/iot-developer-survey-2019.pdf; 1717 participants
- 16. Confidential and Proprietary. Copyright © by dc-square GmbH. All Rights Reserved. Pub/Sub • lightweight protocol on top of TCP/IP • Pub/Sub pattern • de-coupling of sender and receiver • central component: the broker !16
- 17. Java Based Open Source Stack
- 18. !18
- 20. HiveMQ MQTT broker built for enterprise applications Extensive plugin system Scales to > 10 million of concurrent connections OSS Community Edition available Built for High Availability and used by 150+ of the largest IoT deployments in the world
- 21. Enterprise MQTT Devices HiveMQ Enterprise unreliable network Protocol Integration Enterprise Systems • Kafka • OAuth Server • … Kubernetes, Docker, OpenShift Public or private cloud (AWS, MS Azure…) or on-premise Backend
- 22. Enterprise MQTT Devices HiveMQ Enterprise unreliable network Protocol Integration Enterprise Systems • Kafka • OAuth Server • … Kubernetes, Docker, OpenShift Public or private cloud (AWS, MS Azure…) or on-premise Backend
- 23. HiveMQ Community Edition Full-featured and lightweight Java MQTT Broker Extensive plugin system Ideal for Edge Devices and Java Applications Apache 2 License Foundation of HiveMQ Enterprisehttps://github.com/hivemq/hivemq-community-edition/
- 24. Extension System • Allows developers to integrate any system • Implement custom authentication and authorization behavior • Data forwarding to other backend services • Direct device communication possible for other systems • Modify MQTT packets and and protocol behavior • Hot Reload of Extensions possible !24
- 25. Marketplace • Pre-built Extensions for integration with popular technologies • Open Source Extensions available • Commercial Extensions available !25
- 27. HiveMQ MQTT Client Java based MQTT library Developed by HiveMQ and BMW Car-IT Built for devices and backends Open Source (Apache 2) Extremely fast and low overhead
- 28. Overview 3 API Styles: Simple,Future-based and Reactive Designed for extreme throughput and low memory consumption Backpressure Support Java based and licensed under the Apache 2 License Full MQTT 5 & MQTT 3.1.1 Support
- 29. Features Full MQTT 3.1.1 support SSL / TLS (with optional native BoringSSL integration) 3 API Styles: Blocking,Non-Blocking,and Reactive Websocket Support Full MQTT 5 Support with all optional features
- 30. Features Automatic Reconnect Offline Buffering Websocket Transport Support Server Failover Message Persistence
- 31. Features Backpressure Support Additional MQTT 5 Features (e.g. Server Re-auth,…) Pluggable Thread Pools Dropwizard Metrics Integration HTTP CONNECT Support
- 32. HiveMQ MQTT Client Use Cases Big Data Systems Enterprise Application Server Environments (Payara, Glassfish, …) Benchmark Tools Desktop applications as well as mobile applications All Java 8+ based MQTT applications
- 34. !34
- 35. Java ToolsDemo!
- 36. Java ToolsBonus
- 37. !37
- 38. HiveMQ Kafka Extension • Broker uses native Kafka protocol • Full MQTT Features can be used • Bi-directional producing and consumption possible • High Scalability and resilience. • Extreme throughput. Can write hundreds of thousands of MQTT messages per second to Kafka • Ideal for aggregating MQTT topics to Kafka Firehose Topics • Can write to multiple Kafka Deployments !38
- 41. Q & A Time for Questions
- 42. Dominik Obermaier dominik.obermaier@hivemq.com @dobermai Get in touch HiveMQ - Enterprise MQTT Broker www.hivemq.com @hivemq