NoSQL Database MongoDB 1.6 Released with New Features of Automatic Data Sharding and Replica Sets

Thursday Aug 19th 2010 by DatabaseJournal.com Staff
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MongoDB 1.6 has been released and updated with two new features, auto-sharding and replica sets.

MongoDB 1.6 has been released. This open source, NoSQL system from 10gen has been updated with two new features, auto-sharding and replica sets. Sharding is the “ability to subdivide and spread a very large data set across many servers but still continue doing high-speed data updates and retrievals,” which speeds up response to queries and expands a database’s data handling capabilities. MongoDB’s automated sharding will set up a routing map in the database based on a key to each shard so that it knows where data is and can respond to a query or update.

Replica sets “establish a hierarchy among the three nodes handling a data set, with one node the primary handler of the data and two others receiving replicated copies.” Should the primary node be lost, then according to previously established criteria, a new primary node is chosen out of the two remaining and a new third copy of data is made. Replica sets also help increase the speed of updates to the database.

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