The id stride a lane allocates on, so two lanes cannot mint the same one.
Lane n of lanes takes every id congruent to n modulo lanes + 1; the primary is offset 0. The sequence gains gaps, which Drupal tolerates.
n
lanes
lanes + 1
The id stride a lane allocates on, so two lanes cannot mint the same one.
Lane
noflanestakes every id congruent tonmodulolanes + 1; the primary is offset 0. The sequence gains gaps, which Drupal tolerates.