What

Currently, when a host is resolved, pgbouncer checks all server connections for this host and tags connections using IPs not found in the new resolved list as dirty (close_needed). It would be helpful to be able to disable this behavior. This would help avoiding connection churn in scenarios where, for example, the host might return a list of different IP addresses every time (think weighted routing in Route53).

Another option to help with these scenarios would be to provide an admin command like RELOAD_DNS which would force host resolution regardless of the host's DNS TTL (dns_max_ttl).

How

Options:

• Add RESET_DNS_TTL admin command
• Add cf_dns_close_previous option