gistfile1.txt

```mermaid
flowchart TD
    A["🔌 TCP server accepts connection
    Routes to appropriate shard"]

    A --> B{TLS enabled?}

    B -- Yes --> C["🔒 TLS handshake
    Certificate exchange & encryption"]
    B -- No --> D

    C --> D["🤝 CQL version negotiation
    Client & server agree on protocol version"]

    D --> E["⚙️ Protocol OPTIONS exchanged
    Capabilities & features advertised"]

    E --> F{Auth enabled?}

    F -- No --> H
    F -- Yes --> G["🔑 Authentication begins
    Credentials presented by client"]

    G --> G2["#️⃣ Password hash computed
    Verified against stored role hash"]

    G2 --> H["👥 Role memberships determined
    Effective service level calculated"]

    H --> I["🖥️ Assigned to CPU scheduling group
    Based on effective service level"]

    style A fill:#E6F1FB,stroke:#185FA5,color:#0C447C
    style C fill:#E1F5EE,stroke:#0F6E56,color:#085041
    style D fill:#EEEDFE,stroke:#534AB7,color:#3C3489
    style E fill:#EEEDFE,stroke:#534AB7,color:#3C3489
    style G fill:#FAECE7,stroke:#993C1D,color:#712B13
    style G2 fill:#FAECE7,stroke:#993C1D,color:#712B13
    style H fill:#FAEEDA,stroke:#854F0B,color:#633806
    style I fill:#E1F5EE,stroke:#0F6E56,color:#085041
```