On Monday, July 10, 2017 at 9:44:03 AM UTC-4, Mike Bayer wrote:
>
> * Connection pool pre-ping - The connection pool now includes an 
> optional "pre ping" feature that will test the "liveness" of a pooled 
> connection for every connection checkout, transparently recycling the 
> DBAPI connection if the database is disconnected.
>


Can you please detail where this happens?  Would it be on a new Session() 
or on the first time the session is actively used (e.g. SQL is emitted)

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