Glossary
========

.. glossary::

    D1
        Abbreviation of devel. one

    Envelope
        | The envelope of a message contains a lot of meta data which controls how the message is sent to the recipient. 
        | The most important variables are the receiver and sender addresses.
        | See also here: :ref:`Envelope <ENVELOPES>`
        
    NID
        | Namespace ID. 
        | The NID is used when registering namespaces. 
        | It is of type ``IId`` and is unique within a D1-NODE.
        | It is part of a target address.

    NODEID
        | NODE ID (ID of a D1 instance). 
        | The NODEID is of type UUID.
        | It is part of a target address.

    QID
        | Message Queue ID (Thread). 
        | Each asynchronous message queue has its own thread and the queue of all messages that have not yet been processed.
        | The QID is created when registering a queue in a namespace. 
        | It is of the type ``IID``.

    Package Builder Sequence    
        | The way a message is packed between two NODES. 
        | There are currently three types of packing that affect the message data one after the other: M=put the Message into a stream, Z=ZIP Compression, A=AES Encryption.
        | Further Builder are installable.
        | Each message can be treated differently, which is why the header contains the sequence of the applied builders (e. g."MZA").
        | When the message is unpacked, the builders are involved in the reverse order.
        
    SID
        | Service ID.
        | Micro-Services are offered by Targets and registered in the service registry of a namespace.
        | They are identified by the SID. 
        
    TID
        | Target ID. 
        | The TID is of type ``IId`` and is created or used when registering targets in a namespace. 
        | It is unique to a target in a namespace.
        | It is part of a target address.