Postgres-XC tutorial PDF - PGCon

Choosing distribution strategy (2)
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Hash/Modulo distributed – if
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There are high point­read/write loads
The queries have equality conditions on the distribution key,
such that the data comes from only one node (essentially it
becomes equivalent to replicated table for that query)
Round Robin – if
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There is no definite distribution key, but still want to balance the
write load across the cluster
May 16th, 2012 Postgres­XC 62