in reply to Handle DBI connection lost

I have a non-Perl answer but it's probably the best answer that you will receive.

Install pgbouncer and point the app at it. Before you restart the database, connect to pgbouncer and pause all connections to that database. Then you can restart the database. Once the database comes back up, unpause the connections in pgbouncer.

PostgreSQL restart with PgBouncer without losing client connections (YouTube)

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Re^2: Handle DBI connection lost
by bash (Scribe) on Feb 27, 2017 at 12:45 UTC
    PgBouncer is good advice for server restart. Thank you.
    But it doesn't solve network issues.
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