Re: Load balancing of write queries among health-checked nodes

On Mon, Oct 7, 2024 at 11:04 PM <me+postgres(at)kotovalexarian(dot)com> wrote:

> Hello. I have a PostgreSQL high availability cluster with Pgpool-II, but I
> don't use the virtual IP feature so my clients don't know which node to
> send queries to. DNS round-robin is not a solution because it can't
> distinguish between healthy and dead nodes.
>
> I thought about having a Pgpool-II instance on each client (client
> Pgpool-II -> cluster Pgpool-II -> PostgreSQL), but AFAIK it can't
> distribute write queries. I also know that libpq may have multiple nodes to
> connect, but I need an advanced health check because a node may have
> connectivity but be separated from the whole cluster so it must be
> considered dead.
>

Isn't that multi-master clustering?

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