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About: Answer to question: How do I use Virtuoso’s Replication Functionality to configure for High Availability that isn’t dependent on a single publisher?     Goto   Sponge   NotDistinct   Permalink

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  • Answer to question: How do I use Virtuoso’s Replication Functionality to configure for High Availability that isn’t dependent on a single publisher?
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  • For High Availability across multiple publishers nodes bi-directional graph replication would need to be setup between each cluster node, such that writes on one are pushed to the other and vice-versa as detailed at in the documentation at: http://docs.openlinksw.com/virtuoso/rdfgraphreplicationtopl/#rdfgraphreplicationtoplbid For HTTP High Availability access across multiple Farm Subscriber nodes to the SPARQL endpoint a proxy server / load balancer needs to be placed in front of the slave subscriber nodes to enable transparent connection across available nodes as detailed in the documentation at: http://docs.openlinksw.com/virtuoso/rdfgraphreplicationscenr/ For High Availability access across multiple Publisher or Subscriber nodes to the SQL (ie Jena provider/ JDBC /ODBC /ADO.Net etc) interfaces the Virtuoso Round Robin connection functionality needs to be used to enable transparent connection across available nodes as detailed at: http://docs.openlinksw.com/virtuoso/dataccessclientsconfailandbalance/
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