32 lines
1.0 KiB
Plaintext
32 lines
1.0 KiB
Plaintext
Oyster is designed as a 'proactive document cache', meaning that it takes URLs
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and keeps a local copy up to date depending on user-specified criteria.
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Data Model
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==========
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Oyster keeps its data in a MongoDB instance and makes use of GridFS to store the
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raw document data.
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In addition to the standard gridfs collections (fs.chunks, fs.files) oyster
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uses the following collections:
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tracked - metadata for tracked resources
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_id : internal id
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_random : a random integer used for sorting
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url : url of resource
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versioning : string indicating type of versioning to be used for this
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resource. currently set to md5 for all documents
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update_mins : minutes between automatic updates (defaults to 24*60)
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metadata : dictionary of extra user-specified attributes
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logs - capped log collection
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action : log entry
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url : url that action was related to
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error : boolean error flag
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timestamp : UTC timestamp for log entry
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status - internal state
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update_queue : size of update queue
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