Ingest pipeline (Ditaa)

    +---------+   +-------+   +----------+   +-------+
    | Source  |-->| Queue |-->|  Worker  |-->|  DB   |
    | cBLU    |   | cYEL  |   | cGRE     |   | cPNK  |
    +---------+   +-------+   +----------+   +-------+
                                  |
                                  v
                              +--------+
                              | Audit  |
                              | cRED   |
                              +--------+