AsyncPagedListDiffer

 @Dao
 interface UserDao {
     @Query("SELECT * FROM user ORDER BY lastName ASC")
     public abstract DataSource.Factory<Integer, User> usersByLastName();
 }

 class MyViewModel extends ViewModel {
     public final LiveData<PagedList<User>> usersList;
     public MyViewModel(UserDao userDao) {
         usersList = new LivePagedListBuilder<>(
                 userDao.usersByLastName(), /* page size */ 20).build();
     }
 }

 class MyActivity extends AppCompatActivity {
     @Override
     public void onCreate(Bundle savedState) {
         super.onCreate(savedState);
         MyViewModel viewModel = ViewModelProviders.of(this).get(MyViewModel.class);
         RecyclerView recyclerView = findViewById(R.id.user_list);
         final UserAdapter adapter = new UserAdapter();
         viewModel.usersList.observe(this, pagedList -> adapter.submitList(pagedList));
         recyclerView.setAdapter(adapter);
     }
 }

 class UserAdapter extends RecyclerView.Adapter<UserViewHolder> {
     private final AsyncPagedListDiffer<User> mDiffer
             = new AsyncPagedListDiffer(this, DIFF_CALLBACK);
     @Override
     public int getItemCount() {
         return mDiffer.getItemCount();
     }
     public void submitList(PagedList<User> pagedList) {
         mDiffer.submitList(pagedList);
     }
     @Override
     public void onBindViewHolder(UserViewHolder holder, int position) {
         User user = mDiffer.getItem(position);
         if (user != null) {
             holder.bindTo(user);
         } else {
             // Null defines a placeholder item - AsyncPagedListDiffer will automatically
             // invalidate this row when the actual object is loaded from the database
             holder.clear();
         }
     }
     public static final DiffUtil.ItemCallback<User> DIFF_CALLBACK =
             new DiffUtil.ItemCallback<User>() {
          @Override
          public boolean areItemsTheSame(
                  @NonNull User oldUser, @NonNull User newUser) {
              // User properties may have changed if reloaded from the DB, but ID is fixed
              return oldUser.getId() == newUser.getId();
          }
          @Override
          public boolean areContentsTheSame(
                  @NonNull User oldUser, @NonNull User newUser) {
              // NOTE: if you use equals, your object must properly override Object#equals()
              // Incorrectly returning false here will result in too many animations.
              return oldUser.equals(newUser);
          }
      }
 }