Solo vs Live Mode¶

A detailed explanation of ThinkERD's two synchronization modes.

Solo Mode¶

The default mode used when editing alone.

Features¶

• Auto-save — Automatically saves changes to the server
• Offline support — Caches data in the browser for offline work
• Cross-tab sync — Auto-syncs across multiple tabs in the same browser
• Server resource efficiency — Efficient synchronization without real-time connections

Tab Leader Election¶

When the same user opens the same diagram in multiple tabs, only one tab is elected as Leader to communicate with the server. Other tabs act as Followers, syncing indirectly through the Leader.

graph TB
    Server["🖥️ Server"]
    Leader["👑 Tab 1 (Leader)"]
    F1["📄 Tab 2 (Follower)"]
    F2["📄 Tab 3 (Follower)"]

    Leader <-->|REST API| Server
    Leader <-->|"Cross-tab sync"| F1
    Leader <-->|"Cross-tab sync"| F2

    style Leader fill:#fef3c7,stroke:#d97706
    style F1 fill:#f3f4f6,stroke:#9ca3af
    style F2 fill:#f3f4f6,stroke:#9ca3af

Live Mode¶

Automatically activated when 2 or more users are editing simultaneously.

Features¶

• Conflict-free concurrent editing — Auto-merges even when multiple users edit simultaneously
• WebSocket — Real-time bidirectional communication
• Awareness — Shares other users' cursors, selections, and moving nodes in real time
• Auto-merge — Even when the same attribute is modified concurrently, data is merged without loss

Transition Flow¶

Mode Comparison¶