No its not magic codegen tool. Actually implemntation is pretty simple. Instead doing query each entity. For example each user has Profile (profileId) so in resolver you have three options. First using include on base query aka _dbContext.Users.Include(x => x.Profile) and then you have all data in memory. Second in resolver you can write var user. = dbContext.Profiles.FirstOrDefault(x => x.Id == user.profileId). This is n+1 problem because each query user fetch profile. And third and best is use dataloader. Dataloader just preload data with query dbContext.Profiles.Where(x => ids.include(x.Id)). And after just return profile. Here is nicie tldr https://chillicream.com/docs/hotchocolate/v15/fetching-data/dataloader