Setting Up Cascading Replication in PostgreSQL - Mydbops

postgres create replication slot
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The concept of replication slots was introduced in PostgreSQL and was created to prevent a primary instance to delete WAL that a replica

However, until , PostgreSQL primarily supported only a physical replication stream A physical stream is only really useful for a second copy

postgres replication slot Allow you to replicate data out of Postgres · Use the write-ahead log as the source of changes · Use logical replication slots to send out

postgres create replication slot Introduction · Create a sandbox with two PostgreSQL servers · Test table · Filling WAL with random data · Checking the current WAL size · Check