It’s not uncommon in the IT industry to hear people rave about the next big thing and subsequently to sit there wondering, “Just what the heck is it and why do I care?” Node.js certainly seems to be one of those technologies, and frankly, their own answer to this question doesn’t help:
And we still wonder….
So, let’s break it down. There seems to be 3 main pieces to the above statement.
Node.js uses the libuv library to implement an event loop. This loop is constantly monitoring an event queue and processing entries off that queue in a synchronous matter. However, items can be pushed onto that queue in an asynchronous manner from the C++ portions of node and the V8 engine. So, incoming network requests coming from the operating system can be processed asynchronously and put on to the event queue where node processes them one at a time.
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