Exploring DC3: A Spring Cloud‑Based Open‑Source IoT Platform

I often hear people mention the Internet of Things (IoT) without understanding how it differs from the traditional Internet, so I decided to clarify the concept.

IoT (Internet of Things) refers to the real‑time collection of data from any monitored, connected, or interactive object or process using sensors, RFID, GPS, infrared, laser scanners, and other devices, capturing information such as sound, light, heat, electricity, mechanics, chemistry, biology, and location. This data is transmitted over various network connections to achieve ubiquitous object‑to‑object and object‑to‑person connectivity, enabling intelligent perception, identification, and management.

IoT builds upon the Internet, traditional telecom networks, and other information carriers, allowing any independently addressable physical object to form an interconnected network.

According to the 2021 China Internet Development Report, the IoT market size reached 1.7 trillion CNY, while the AI market reached 303.1 billion CNY.

Among many open‑source IoT projects, DC3 stands out as a Spring Cloud‑based, distributed platform that facilitates rapid IoT development and device management, offering a complete solution for IoT systems.

Below are some screenshots of the platform in action:

DC3 Architecture Design

DC3 Modules

Four‑layer architecture

Driver Layer

Provides SDKs for standard or private protocols to connect physical devices, handling southbound data collection and command control; enables rapid driver development based on the SDK.

Data Layer

Responsible for collecting device data, persisting it, and offering data management APIs.

Management Layer

Offers a microservice registry, device command interface, device registration and pairing, and data management center; serves as the core for microservice interaction and configuration management.

Application Layer

Provides data exposure, task scheduling, alarm and notification, log management, and third‑party platform integration capabilities.

DC3 Functional Goals

Scalable: horizontally scalable platform built with leading Spring Cloud open‑source technologies.

Fault‑tolerant: no single point of failure; each node in the cluster is identical.

Robust and efficient: a single server node can handle hundreds of thousands of devices per use case.

Customizable: add new device protocols and register them to the service center.

Cross‑platform: deployable on distributed, multi‑platform environments using Java.

Self‑controlled: supports private cloud, public cloud, and edge deployments.

Comprehensive: fast device onboarding, registration, and permission verification.

Secure: encrypted data transmission.

Multi‑tenant: namespace and multi‑tenant capabilities.

Cloud‑native: Kubernetes integration.

Containerized: Docker support.

The platform is built on a Spring Cloud architecture, comprising a loosely coupled collection of open‑source microservices. These microservices consist of four service layers plus two enhanced foundational system services, delivering end‑to‑end capabilities from physical data acquisition to information‑domain processing.