Are they expected, or are the required? Because, serializing db access through a single process only becomes a problem when the number of reads/writes get so l

Are they expected, or are the required? Because, serializing db access through a single process only becomes a problem when the number of reads/writes get so large, that the process becomes a bottlenec. And judging by the test the author of the linked article did, that would have to be a HUGE number.