Node.js connection handling mechanism is super efficient than our existing classical thread based model Thread-based networking is relatively inefficient and very difficult to use. Furthermore, users of Node are free from worries of dead-locking the process, since there are no locks. Almost no function in Node directly performs I/O, so the process never blocks. Because nothing blocks, scalable systems are very reasonable to develop in Node.
Node.js is an open source server environment
Node.js is free
Node.js runs on various platforms
Features of Node.js
Asynchronous and Event Driven : All APIs of Node.js library are asynchronous, that is, non-blocking. It essentially means a Node.js based server never waits for an API to return data. The server moves to the next API after calling it and a notification mechanism of Events of Node.js helps the server to get a response from the previous API call.
Single Threaded but Highly Scalable : Node.js uses a single threaded model with event looping. Event mechanism helps the server to respond in a non-blocking way and makes the server highly scalable as opposed to traditional servers which create limited threads to handle requests. Node.js uses a single threaded program and the same program can provide service to a much larger number of requests than traditional servers like Apache HTTP Server.
Following are the areas where Node.js is proving itself as a perfect technology partner.
. I/O bound Applications
. Data Streaming Applications
. Data Intensive Real-time Applications (DIRT)
. JSON APIs based Applications
. Single Page Applications
. Web application frameworks
. Package management
. Cloud platforms
. front end
. Source control
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