Commanded.Middleware.Uniqueness is a Commanded middleware for checking certain values uniqueness during commands dispatch. Might be useful as a short-term unique values cache before subsequent events persisted and projected.
Based on the @slashdotdash 's idea described in his “Building Conduit” book.
Github: https://github.com/vheathen/commanded-uniqueness-middleware
As it is in a very alpha stage didn’t publish on Hex yet.
Any thoughts and ideas are more than welcome!