Query in PI7.1 Service Interface

Hi Friends,

I recently started working on PI7.1, its really good compare PI7.0 and XI 3.0.

Now my query is when i am creating service interface(message interface) i found some new options added.

can anyone explaina about

1) Interface Pattern its having different options Stateless , statefull , TU&CC and Stateless(XI 3.0 Compatible.

2) Operation Pattern its having different options commit,roll back,confirm,compensate,tentavi update

please explain when we will use pattern and different types.

Thanks

Raj