You can find this article here: https://medium.com/doctrine/finding-long-synchronous-operations-in-node-js-with-async-hooks-c078ef511134

Yes you can scale PostgreSQL! And this is how we did it at Doctrine.

You can find this article here: https://medium.com/doctrine/au-revoir-rails-bonjour-node-js-307aa262ca89

You can find this article here: https://medium.com/doctrine/how-doctrine-has-massively-improved-its-node-js-error-analysis-with-async-hooks-2917e4b69d5d