May 2019
Intermediate to advanced
600 pages
20h 46m
English
book
PostgreSQL 11 Administration Cookbook
by Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala, Sheldon Strauch
Content preview from PostgreSQL 11 Administration Cookbook
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Getting ready
This recipe assumes that you have already set up replication according to the earlier recipes so that wal_level, max_wal_senders, and the other parameters are set.
A replication slot represents one link between two nodes. At any time, each slot can support one connection. If you draw a diagram of your replication architecture, then each connecting line is one slot. Each slot must have a unique name. The slot name must contain only lowercase letters, numbers, and underscores.
As we discussed previously, each node should have a unique name. So, a suggestion would be to construct the slot name from the two node names that it links. For various reasons, there may be a need for multiple slots between two nodes, so additional information ...
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