Friday, March 30th, 2012

Node.js – The objective is absolutely fast I/O

Category: Node

<>p>Node.js employs an event-driven architecture and a non-blocking I/O model, and it provides some blindingly fast performance to some types of data-intensive Web apps. It is about JavaScript on the server side. LinkedIn, Yahoo and eBay are among ardent Node.js users, and none other than Microsoft has discussed end-to-end JavaScript coverage on its Azure cloud. The objective is absolutely fast I/O.

This article features Joyent CTO and co-founder Jason Hoffman, who discusses the roots and reason of node.js. He said:

“Why we did it is, at Joyent we have a lot of servers, more than most companies in the Fortune500 and we write in C, in a compiled language. We needed to write servers in a dynamic language for talking to certain protocols. Basically, we had to write service endpoints. The Node part of Node.js is separate. It is designed so that it can handle a lot endpoints – on the order of a million. Most things written for the [Java Virtual Machine] can only handle 20,000 [endpoints]. Node is meant to handle a lot of I/O. So we took the node part and married that with V8 [the JavaScript virtual machine from Google].”

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Posted by jvaughan at 10:03 pm
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Hi

going through it , but did not get full info, can u clarify about non bloking I/O

Comment by Intellectsolve2502 — April 18, 2012

So, the non-blocking I/O claim that Node.js makes is based on the idea that a server should always be open for input/output, so they designed Node to use event queues that let it run asynchronous processes, handling each request in the order that it’s received. It doesn’t thread things out, it does just the next step and sends it back to the end of the line. According to Node proponents, that provides awesome performance and scalability.

You might want to read the Node.js definition for more info and relevant links.

Comment by JDenman — June 15, 2012

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