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BigTable and Google DataStore

BigTable and Google DataStore. BigTable. Physically sorted on row-key – like a row-store Column families - like column-stores Variable (record-by-record) columns within a column family Column-values versioned; stored in reverse chronological order

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BigTable and Google DataStore

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  1. BigTable and Google DataStore

  2. BigTable • Physically sorted on row-key – like a row-store • Column families - like column-stores • Variable (record-by-record) columns within a column family • Column-values versioned; stored in reverse chronological order • Designed to store hyperlink structure of web

  3. BigTable Storage Also: • Chubby lock-manager manager used to store location of root, column-families per-table, access-control lists etc. and ensure atomic access to such informations

  4. Google Data Store - recap entity groups range queries

  5. Google Datastore in BigTable • View the Entities BigTable as a sharded array sorted lexicographicallyby key values • Most indexes created automatically by GAE when queries are run for the first time • Certain indexes, such as composite indexes, need to be specified by developers z

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