websocket-engineer

```

tb-docs-project/

├── docs/ # 115 markdown documentation files

├── ref/

│ ├── thingsboard-master/ # ThingsBoard platform source code

│ └── thingsboard.github.io-master/ # Official documentation source

├── .claude/skills/ # 38 Claude Code skills for development

└── CLAUDE.md # AI assistant instructions

```

The documentation is organized into 18 sections for logical progression from architecture to deployment:

| # | Section | Description | Files |

|---|---------|-------------|-------|

| 01 | [Architecture](docs/01-architecture/) | System design, topology, multi-tenancy | 3 |

| 02 | [Core Concepts](docs/02-core-concepts/) | Entities, data models, identity, provisioning, OTA, profiles | 13 |

| 03 | [Actor System](docs/03-actor-system/) | Concurrency, message-driven architecture | 4 |

| 04 | [Rule Engine](docs/04-rule-engine/) | Processing pipelines, node types, TBEL, queues, analytics | 14 |

| 05 | [Transport Layer](docs/05-transport-layer/) | Device protocols (MQTT, CoAP, HTTP, LwM2M, SNMP) | 9 |

| 06 | [API Layer](docs/06-api-layer/) | REST, WebSocket, RPC, alarms, notifications | 9 |

| 07 | [Data Persistence](docs/07-data-persistence/) | PostgreSQL, Cassandra, TimescaleDB, caching | 8 |

| 08 | [Message Queue](docs/08-message-queue/) | Kafka configuration, partitioning | 4 |

| 09 | [Security](docs/09-security/) | Authentication, authorization, rate limiting | 4 |

| 10 | [Frontend](docs/10-frontend/) | Angular architecture, widget system | 2 |

| 11 | [Microservices](docs/11-microservices/) | Service types, EDQS, JS Executor | 7 |

| 12 | [Edge](docs/12-edge/) | Edge computing, cloud sync | 4 |

| 13 | [IoT Gateway](docs/13-iot-gateway/) | Gateway architecture, protocol connectors | 3 |

| 14 | [Integrations](docs/14-integrations/) | Cloud, LoRaWAN, messaging platforms | 4 |

| 15 | [TBMQ](docs/15-tbmq/) | MQTT broker architecture | 3 |

| 16 | [Trendz](docs/16-trendz/) | Analytics, visualizations, predictions | 4 |

| 17 | [Mobile App](docs/17-mobile-app/) | Flutter app, customization | 3 |

| 18 | [Deployment](docs/18-deployment/) | Installation, configuration, monitoring | 4 |

Reading the Documentation

Start with these key documents based on your role:

For Platform Understanding:

1. [Architecture Overview](docs/01-architecture/system-overview.md) - High-level system design
2. [Multi-Tenancy](docs/01-architecture/multi-tenancy.md) - Tenant isolation model
3. [Data Model](docs/02-core-concepts/data-model/) - Entity relationships

For Device Development:

1. [Device Provisioning](docs/02-core-concepts/device-provisioning.md) - How devices join
2. [Transport Layer](docs/05-transport-layer/) - MQTT, CoAP, HTTP protocols
3. [Device API](docs/06-api-layer/device-api.md) - Telemetry and RPC

For Backend Development:

1. [Rule Engine](docs/04-rule-engine/) - Data processing pipelines
2. [Actor System](docs/03-actor-system/) - Concurrency model
3. [Data Persistence](docs/07-data-persistence/) - Database configuration

For Operations:

1. [Deployment](docs/18-deployment/) - Installation guides
2. [Security](docs/09-security/) - Authentication and rate limiting
3. [Hybrid Storage](docs/07-data-persistence/hybrid-storage.md) - Scaling decisions

Glossary

See [GLOSSARY.md](docs/GLOSSARY.md) for comprehensive terminology with Mermaid diagrams showing concept relationships.

ThingsBoard Platform

| Component | Technology |

|-----------|------------|

| Backend | Java 17, Spring Boot 3.4.10 |

| Frontend | Angular 18.2.13, Angular Material |

| Message Queue | Kafka 3.9.1 |

| Databases | PostgreSQL, Cassandra, TimescaleDB |

| Protocols | MQTT, CoAP, HTTP, LwM2M, SNMP, WebSocket |

| Architecture | Actor-based concurrency, microservices |

Reference Source Code

The ref/ directory contains source code for analysis:

```bash

~/work/viaanix/thingsboard-master/ # Platform source (Java/Angular)

~/work/viaanix/thingsboard.github.io-master/ # Official docs (Jekyll)

```

Building ThingsBoard (from ~/work/viaanix/thingsboard-master):

```bash

# Full backend build

./build.sh

# Frontend development

cd ui-ngx

npm start # Dev server at localhost:4200

```

Style Guidelines

• Mermaid diagrams for architecture visualization
• Tables for configuration options and comparisons
• Code blocks for configuration examples
• Bold for UI elements, backticks for code/variables
• Action-oriented headings: "Configure rate limiting" not "Rate limiting configuration"

Cross-References

Each section README includes:

• Contents table with descriptions
• Key concepts summary
• See Also links to related sections

Target Audience

This documentation targets junior to mid-level developers who need to:

• Understand ThingsBoard's architecture
• Extend platform functionality
• Deploy and operate ThingsBoard
• Integrate devices and external systems

Adding Documentation

1. Place new files in the appropriate docs/##-section/ directory
2. Update the section's README.md contents table
3. Add cross-references to related documents
4. Include Mermaid diagrams for complex concepts
5. Update CLAUDE.md file counts if adding new files

Documentation Quality

• Lead with what to do, then explain why
• Keep explanations concise and actionable
• Use real configuration examples
• Include troubleshooting sections
• Avoid Java-specific implementation details (focus on behavior/contracts)

File Counts

Current documentation: 115 markdown files

Update CLAUDE.md when adding/removing documentation files.

Claude Code Skills

The .claude/skills/ directory contains 38 specialized skills for:

• IoT development (mqtt-expert, grpc-expert)
• Documentation (docs-write, docs-review)
• Planning (create-plan, brainstorming)
• Research (web-research, research-analyst)

Invoke skills with /skill-name in Claude Code.

This documentation project is for internal use. ThingsBoard is licensed under Apache 2.0.

• [ThingsBoard Official Docs](https://thingsboard.io/docs/)
• [ThingsBoard GitHub](https://github.com/thingsboard/thingsboard)
• [ThingsBoard Community](https://github.com/thingsboard/thingsboard/discussions)

• progressive delivery