have you had a look at https://github.com/oklog/oklog https://github.com/oklog/oklog https://www.youtube.com/watch?v=gWWK2eyZ-sc https://www.youtube.com/watch?v

have you had a look at https://github.com/oklog/oklog https://github.com/oklog/oklog https://www.youtube.com/watch?v=gWWK2eyZ-sc https://www.youtube.com/watch?v=gWWK2eyZ-sc I think it's fairly simple and might be enough. Can't comment on storage requirements thou.