PostgreSQL 9.0 Adds Replication and Hot Standby

Monday Sep 20th 2010 by Developer.com Staff
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PostgreSQL is Oracle's open source competition, with version 9, it just get more competitive.

PostgreSQL 9.0 is out today. The two most impressive features are replication and hot standby.

"The streaming replication technology allows continuous archive (WAL) files to be streamed over a network connection to a standby server," reported eWeek's Brian Prince. "Hot standby, meanwhile, enables continuous archive standby servers to execute read-only queries."

"The built-in replication in 9.0 and ability to query a hot standby have been the most requested PostgreSQL features for many years," said Simon Riggs, CTO of 2ndQuadrant and lead contributor to hot standby, in a statement. "Efficient, low latency streaming replication protects your data better, while hot standby significantly reduces total cost of ownership. In proprietary products, this capability is an add-on which costs thousands of dollars."

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