[pdimitar]

I lost the link to one Golang library that I liked very much but here's the link to Elixir's Ecto: https://hexdocs.pm/ecto_sql/Ecto.Adapters.SQL.Sandbox.html (not the perfect one, sorry, but can't be bothered to look for a better resource). The TL;DR is as above: it uses the same DB but does parallel connections to it and in each you have a transaction that's ultimately rolled back.