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ADAPTIVE QUERY ROUTING IN A REPLICATED DATABASE ENVIRONMENT
ADAPTIVE QUERY ROUTING IN A REPLICATED DATABASE ENVIRONMENT
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机译:替换数据库环境中的自适应查询路由
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摘要
Technologies are described providing adaptive query routing in a replicated database environment. The technologies can be used with a variety of replication protocols. Prepared statements, such as for queries, from a database client can be routed to a source node, or a source node and available replica nodes, when a replica node becomes unavailable. When a replica node becomes available again, a prepared statement can be updated to indicate that the updated prepared statement can be executed at nodes including the replica node that is available again. Prepared statement routing can also be used when a portion of replicated data becomes unavailable at a replica node, but a portion of replicated data remains available.
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