#Batching #N+1 #BatchLoader #Ruby #GraphQL #Dataloader #Haxl #Lazy #Monad #Promise * Blog post: https://engineering.universe.com/batching-a-powerful-way-to-solve-n-1-queries-every-rubyist-should-know-24e20c6e7b94 * BatchLoader: https://github.com/exaspark/batch-loader