doc: ADR for removing MongoDB usage.#29098
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This sums up what we have been talking around the community spaces. Thanks a lot. 👍 |
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FYI @kdmccormick, @connorhaugh, @kenclary I'm holding this open for a couple of weeks in case anyone wants to raise concerns: https://discuss.openedx.org/t/adr-for-removing-mongodb-from-edx-platform/6001 |
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| * Old Mongo (``DraftModuleStore``) will be removed as a storage backend altogether. This is already covered under DEPR-58, and affects only old style courses with course keys in the "Org/Course/Run" format (as opposed to the "course-v1:Org+Course+Run" format). | ||
| * ContentStore storage of course static assets will be moved to django-storages, allowing for pluggable backends (e.g. files, S3, GridFS). | ||
| * Split Modulestore (``DraftVersioningModuleStore``) will be moved to use the Django ORM for the active version lookup, and django-storages to replace key-value storage of what are structure and definition documents today. |
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"Django ORM" => are you planning to use any existing library for versioning or formulating version look-up schema from scratch?
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Versioning will use the same implementation as it does today (in MongoDB), but the data will just be stored in a MySQL row instead of a MongoDB document. You can see the details in https://github.com/edx/edx-platform/pull/29058
However, the move to the MySQL table does allow us to also use django_simplehistory, so we've turned that on for the active versions table, and it provides a historical record of the changes to each course.
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EdX Release Notice: This PR has been deployed to the staging environment in preparation for a release to production. |
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EdX Release Notice: This PR has been deployed to the production environment. |
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ADR for removing MongoDB as a dependency of edx-platform.