title: Postgres Sequence jumping by 32
body: <p>We use sequences to maintain the number of orders at a particular business unit.
  Last few we days, we have noticed that there have been has strange jumps ranging from 1 to 32 in the sequence numbers, multiple times a day.
  The sequence which we have configured has a cache_value of 1.
  Why is this happening and how can we resolve this?
  I couldn't find much documentation regarding the same.</p>