diagram

---
config:
  theme: neo
---
graph TB
    Client[Client Application]
    API[API Server]
    WriterQueue[Writer Queue]
    Writer[Writer Worker]
    TMQueue[Transport Manager Queue]
    TM[Transport Manager Worker]
    WSQueue[WebSocket Queue]
    WS[WebSocket Worker]
    DB[(Database<br/>Elasticsearch)]
    Redis[(Redis<br/>Subscriptions & Devices)]

    Client -->|REST API| API
    Client <-.->|WebSocket Connection| WS

    API -->|Create/Update/Delete| WriterQueue
    WriterQueue --> Writer
    Writer -->|Persist Data| DB
    Writer -->|Notify Change| TMQueue

    TMQueue --> TM
    TM -->|Check Subscriptions| Redis
    TM -->|Route Notification| WSQueue

    WSQueue --> WS
    WS -->|Push Update| Client

    API <-->|Read/Write| DB
    API <-->|Manage Subscriptions| Redis

    style API fill:#e1f5ff
    style Writer fill:#fff4e1
    style TM fill:#ffe1f5
    style WS fill:#e1ffe1
    style DB fill:#f0f0f0
    style Redis fill:#f0f0f0