Hello Philip!
I think there is an issue with this part of the code of rqlite (store/store.go).

func (s *Store) Database(leader bool) ([]byte, error) {
	if leader && s.raft.State() != raft.Leader {
		return nil, ErrNotLeader
	}
	// Ensure only one snapshot can take place at once, and block all queries.
	s.mu.Lock()
	defer s.mu.Unlock()

	f, err := ioutil.TempFile("", "rqlilte-snap-

what is prefer way to add relation and remove relation? I found example as below, but I did't find any document about the two methods.

 case 'ADD_AUTHOR_TO_BOOK':
        Book.withId(action.payload.bookId).authors.add(action.payload.author);  // add new entity ,  add relation?  this doesn't work.
        break;
    case 'REMOVE_AUTHOR_FROM_BOOK':
        Book.withId(action.payload.bo

Per discussion in #2743 this class is mis-named.

Also, rename LinkStreamValue to just plain LinkStream.

There is instrumentation on the store timer that takes a future, but the problem can be that if a future is created and then stuff is done with it for a while before it is instrumented, the metric will only record time for the events that have happened after the future has been created.

One way to improve this might be to have a version of instrument that takes a `Supplier<CompletableFuture<T