> the async nature of Node made my head nearly explode. There is a reason that paradigm exists, other than to make development frustrating. How do you avoid t

> the async nature of Node made my head nearly explode. There is a reason that paradigm exists, other than to make development frustrating. How do you avoid thread exhaustion in PHP if you synchronously block on a line that could take a really long time to complete? (Making a request to an external HTTP service, for example)