Pretty sure they are talking about https://github.com/zonkyio/embedded-postgres-binaries https://github.com/zonkyio/embedded-postgres-binaries. It's not exactly

Pretty sure they are talking about https://github.com/zonkyio/embedded-postgres-binaries https://github.com/zonkyio/embedded-postgres-binaries. It's not exactly embedded postgresql since it still runs the full postgresql in a separate process but it is close enough for most purposes.