How to overcome unavailablity of replication slots in HA standby ...
This document provides an overview of setting up out of the box replication in PostgreSQL 9.4 without third party tools. It discusses write-ahead logs (WAL), replication slots, pg_basebackup, pg_receivexlog and monitoring replication.
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A special kind of circuit breaker is the tandem breaker, which is designed to allow two 120-volt circuits to be fit into a single slot in the circuit breaker box.
