The IDocumentSession in RavenDb should be registered per lifetime scope while the DocumentStore should be resisted as a single instance in Autofac. It's my third time that I'm making a big mistake about the registering of dependencies in autofac! Although it's not a production code and it was just a sort of practice for me.
class DependencyRegistery
{
public static void Register()
{
var builder = new ContainerBuilder();
builder.Register(x =>
{
var store = new DocumentStore();
store.Initialize();
return store;
}).As<IDocumentStore>().SingleInstance();
builder.Register(x => x.Resolve<IDocumentStore>().OpenSession())
.As<IDocumentSession>()
.InstancePerLifetimeScope();
}
}