Advantage of Node Js

The ability to scale up quickly: Each of the nodes in Node.js is based around an “event.” A customer buys an in-app purchase, or sends an email to customer service, for instance. The amount of nodes you can add to your core programming function are nearly limitless. This means you can scale vertically, adding new capability paths that lead back to your core application code. Or, you can scale horizontally, adding new resources to existing programming. Either way, scalability gives your application room to grow, and that‟s one of the key benefits of using Node.js.
Speed and Performance: Its non-blocking, input-output operations make the environment one of the speediest options available. Code runs quickly, and that enhances the entire run-time environment. This is largely due to its sectioned-off system. But it also has to do with the fact that it runs on Google‟s V8 JavaScript engine. Its apps are more likely to be programmed end-to-end in Javascript, and that plug and play interoperability contributes to speed and performance.
Flexibility: In a discussion of Node.js pros and cons programming flexibility is perhaps the biggest benefit of all. When you make a change in Node.js, only that node is affected. Where other run time environments or frameworks may require you to make changes all the way back to the core programming, it doesn‟t require anything more than a change to the node. And that is great not just for your initial build, but for your ongoing maintenance as well. And best of all, when you combine JSON with Node.js, you can easily exchange information between client servers and the webserver. Programmers can also use APIs to build TCP, HTTP, DNS, etc. into the server.
Efficient caching: In a debate over the pros and cons of Node.js, caching always comes up as a key Node.js benefit. It has a powerful ability to cache data. When requests are made to the app, they are cached in-app memory. Consequently, when requests cycle through execution and re-execution, the nodes are still able to run efficiently and not be bogged down by historical data.
Fast-to-market-development: Node‟s basis in JavaScript brings many benefits to the table, especially the ease at which developers can add more features and predesigned tools and templates.
Efficient Queueing of Requests: A critical benefit of using Node.js is its ability to handle multiple requests at once. How does it do this? By offering users an optional nob-block I/O system. The system works by giving priority to those requests that take the lowest response time. This prioritization helps speed up the overall running of your app, especially when comparing it to other languages like Python or Ruby on Rails.