Pgcheck and delayed replics

Two months ago we announced pgcheck - a tool for automatic load control on PostgreSQL databases using PL/Proxy. Today we have fixed all found issues about one new feature - pgcheck can now account replication delays and not to route queires on delayed replics.

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Pgcheck

A month ago I spoke about first steps in Yandex.Mail with PostgreSQL and particularly about our tools to provide fault tolerance. One of them is pgcheck - tool for monitoring backend databases from PL/Proxy hosts and changing plproxy.get_cluster_partitions function output to for controlling load on databases.

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