blance implements a straightforward partition assignment algorithm, using a greedy, heuristic, functional approach.
blance provides features like multiple, user-configurable partition states (master, replica, read-only, etc), multi-level containment hierarchy (shelf/rack/row/zone/datacenter awareness) with configurable inclusion/exclusion policies, heterogeneous partition weights, heterogeneous node weights, partition stickiness control, and multi-master support.
LICENSE: Apache 2.0
See the PlanNextMap() function as a starting point.
To get local coverage reports with heatmaps...
go test -coverprofile=coverage.out -covermode=count && go tool cover -html=coverage.out