One other thing to look at is if keeping a database connection is the most
effective use of the limited bandwidth. Maybe sending the (partial)
queries/responses as text via sockets has less overhead.
You may also want to analyse the workflow more and see which information
really needs to be shared and which one can remain local. If you only need to
exchange the booked/available status for rooms then passing on the guest
information is not necessary.
Overall, you can minimize the impact, but there is no way to use PHP or some
other tool to code a better connection.
David
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