logilab-database #208555 have a sequence-like numrange object allowing to reserve whole number ranges [validation pending]

The current sequence is used to generate eids in cubicweb.

However, whenever one wants to reserve whole eid ranges (of, say, size N), one must perform N increment_sequence calls.

We will now be able to reserve number ranges in O(1) steps.

prioritynormal
typeenhancement
done in1.12.0
load0.200
load left0.000
closed by#a6706284f282 [numrange] add a new type of sequence that can deliver whole ranges at a time
patch[numrange] add a new type of sequence that can deliver whole ranges at a time [applied]