Internal LevelDB Setup
Calvin Metcalf edited this page Apr 17, 2014
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While this is just for the LevelDB adapter, the IndexedDB and WebSQL ones are setup similarly.
We use LevelUp as a driver for LevelDB and partition the database using SubLevel into 4 sub databases.
- docStore stores document metadata by doc id
- bySeqStore stores document content by sequence number, and since sequence numbers will always be binary, database metadata is stored here with string keys.
- attachmentStore stores some sort of index for attachments
- binaryStore stores actual attachments
to get a document you first get the document sequence number by querying the docStore and then query the bySeqStore to get the document data.