2020-04-08 21:47:34 +00:00
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Object table
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Rename version table to object table
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In value handle the different versions
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2020-04-09 14:16:27 +00:00
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So that the table becomes bucket + Sort key = object key -> CRDT(list of versions)
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2020-04-08 21:47:34 +00:00
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CRDT merge rule:
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- keep one complete version (the one with the highest timestamp)
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- keep all incomplete versions with timestamps higher than the complete version
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Cleanup rule: remove incomplete versions after a given delay (say 24h)
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Block table
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Table is version_UUID -> BTreeMap<(offset, block hash)> OR Deleted (= CRDT top)
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Block reference table
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Table is block_Hash + Sort key: version_UUID -> boolean (true when deleted)
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Since the hash key is the same as for the blocks themselves,
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we can simply consider the updates to this table as events that increase/decrease a reference counter.
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