13 Sep '17, 1am

Asynchronicity, threading, node.js and Ruby on Rails

Aside from using a different scripting language, it seems that the main appeal of node.js is it's support for event-driven programming which makes it easier to write scalable servers (or other typically I/O bound applications) due to its simplified non-blocking I/O calls. However, this feature comes at the expense of having to learn a new programming model which essentially requires you to pass callback after callback function making some straightforward tasks (e.g. dependent sequences of actions) a bit more complicated. Contrast that programming model to the traditional one of Ruby on Rails which blocks on all I/O operations and is (effectively) single-threaded (due to MRI's green thread implementation). Just dreaming out loud here, it seems that it should be possible to implement a Ruby (or Rails) runtime which reconciles these models by trapping I/O calls, transparently...

Full article: http://www.nodejsrecipes.com/recipes/6476516/asynchronici...

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