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Postgres FM
POSGIS UM and LIP PECU
In recent POSGIS versions we have improvements in LIP PECU, this is a library which is used by application code to connect to POSGIS. And already for many years you could use multiple hosts in connection, so you can say this host or that host or thathost. But also there is target attributes, I don't remember exactly, but you can say now I need read-write connection. And now I need only read-only connection. If it knows what you need and it can automatically switch to the primary if it knows you will need writes. Or presumably some of the load balancing tools and operators support that kind of thing as well. It's an interesting topic
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