Hello friends,

I'm trying to set-up a remote database for my Rails application
(mysql-server running on separate VM). My host (Azure) has an idle-timeout
setting of 4 minutes on all TCP connections. Because of that, if a Rails
process is idle for more than 4 minutes, the connection hangs. The process
holding the connection (Unicorn, Sidekiq) also hangs.

The backtrace shows that the process is stuck at *ping* -

`block in checkout_and_verify'

For now I have implemented a sort of heat-beat that keeps the
Unicorns/Sidekiq connections alive, but I feel its fragile. I wonder if
there is a way here to tell from the Rails side that the connection has
gone? Or may be apply some kind of timeout on *ping* itself ?

Please share any ideas or suggestions this.
Thanks in advance,

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