how do i create a non-blocking asynchronous function in node.js?

Question

How do I create a non-blocking asynchronous function? Below is what I\'m trying to achieve but my program is still blocking...

var sys = require(\"sys\");

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Answer 1

If i do understand what you're after, you have two functions (both take a callback as argument):

process.nextTick: this function can be stacked, meaning that if it is called recursively, it will loop a huge (process.maxTickDepth) number of times per tick of the event loop.

or

setImmediate: this function is much closer to setting a 0 timeout (but happens before).

In most cases, you should prefer setImmediate.