The person who was talking about this optimization should know that they should provide context. Do they work for a high frequency trading firm? Do they make a

The person who was talking about this optimization should know that they should provide context. Do they work for a high frequency trading firm? Do they make a CRUD app which has few users and (as much as I hate that) "they can wait even 5 seconds". If the person does not give context then they dont explain well.. On a side note: for me the problem seems to be not the speed, but the choke point - just 2 servers (with no redudancy?). What one or both go down?