We are experiencing consistent connection timeouts between our Retool Hosted instance and our AWS PostgreSQL database. The connection appears to be dropped after approximately 20 minutes of inactivity. We then have to go to Resources in Retool and manually run 'Test connection' twice (with about a 4-minute wait in between) to re-establish the connection. Our PostgreSQL idle_session_timeout is set to '0', and idle_in_transaction_session_timeout is '1d', so the timeouts are not originating from the database itself. We suspect an idle connection timeout might be occurring somewhere in the network path...?
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