43 lines
1.2 KiB
ReStructuredText
43 lines
1.2 KiB
ReStructuredText
################################
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Overview of the edX Modulestores
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The edX Platform uses several different modulestores to store course data. Each
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of these modulestores is in use on edx.org.
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See:
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* `XMLModuleStore`_
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* `DraftModuleStore`_
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* :ref:`Split Mongo Modulestore`
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**************
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XMLModuleStore
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**************
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The XMLModuleStore was the first modulestore used for the edX Platform.
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XMLModuleStore uses a file system that stores XML-based courses. When the LMS
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server starts, XMLModuleStore loads every block for every course into memory.
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XMLModuleStore is read-only and does not enable users to change a course
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without restarting the server.
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****************
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DraftModuleStore
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****************
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DraftModuleStore was the next generation modulestore and provides greater
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scalability by allowing random access to course blocks and loading blocks on
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requests.
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DraftModuleStore allows editing of courses without restarting the server.
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In addition, DraftModuleStore stores a draft version of some types of blocks.
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***********
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Split Mongo
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***********
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Split Mongo is the newest modulestore. See the :ref:`Split Mongo Modulestore`
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chapter for more information. |