const SORT_RANK_STRIDE: i64 = 1_000;Expand description
Gap between adjacent sort ranks assigned by Db::compute_sort_keys.
Ranks are stored as multiples of this value (1 000, 2 000, 3 000, …) so
that a single newly-added book can be placed at the midpoint between its
two neighbours without touching any other row. See Db::insert_sort_rank.