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@@ -26,6 +26,16 @@ To actually perform the repository-wide deduplication, a hash of each
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chunk is checked against the :ref:`chunks cache <cache>`, which is a
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hash-table of all chunks that already exist.
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+.. figure:: internals/structure.png
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+
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+ Layers in Borg. On the very top commands are implemented, using
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+ a data access layer provided by the Archive and Item classes.
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+ The "key" object provides both compression and authenticated
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+ encryption used by the data access layer. The "key" object represents
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+ the sole trust boundary in Borg.
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+ The lowest layer is the repository, either accessed directly
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+ (Repository) or remotely (RemoteRepository).
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+
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.. toctree::
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:caption: Contents
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Marian Beermann
