What is Node.js?
What is the advantage Node?
C Node is easier to scale. If you connect to thousands of users Server Node operates asynchronously, that is, sets priorities and allocates resources more competently. Java is, for example, allocates for each connection a separate thread.
Location Node generally come from?
Node appeared in 2009 thanks to Ryan Dalu. Prior to that, the servers reigned approach “one thread per connection”, but Dahl came up to use the system, which focuses on events. That is reacting to an act or omission, and allocates a resource. The main purpose of Node – to build scalable network servers.
Some of the major companies using Node?
Of course, this is an incomplete list:
eBay is gradually moving to the Node, as well as a web version of PayPal. In LinkedIn more in 2012 moved to the Ruby On Rails on the Node and immediately felt the benefits of this platform: 27 servers showed a 20-fold increase in speed.
What can I write to Node?
A full program for the Web, Linux, OS X and Windows.
And if more?
No problem. Node is useful for creating API – there are already comfortable library like Loopback.
In this language, you can write cross-platform applications – in conjunction mobile + desktop Node helps to achieve synchronicity. For example, when you write a message with the phone, it immediately appears on the laptop and on the Web.
And something fashionable Node knows?
Of course. Node – is the home of all “Internet of things» (Internet of Things, IoT). Thermostats, fitness trackers – all this can be programmed via the Node.
Node accidentally losing popularity?
Quite the contrary. Here is a chart of interest to the Node since 2009 in Google search:
Interest in the Node is growing rapidly and already passes on this indicator, Ruby and Objective-C.
Now after a brief terminological definition of Node by an experienced Node.JS developer, we’d like to provide some basic info on web development with node and express.
So let’s take a glance under the bonnet of Node.JS, see it main elements and sort out pros and cons.
Scripting or glue languages operate with ready software components describing scenarios of their interactions. Most of them (including JS) are interpreted.
|Interpreted||Precompiled||Compiled (system languages)|
|Interpreter is fed a script, executing it block by block||Scenarios are precompiled into an intermediate – bytecode||Program code is compiled into a binary executable|
Being an interpreted language brings two major advantages to JS. First – due to step-by-step execution it allows some in-flight adjustments, second one is cross-platform nature of scenarios, they could be launched wherever there is an interpreter.
However, JS also has some shortcomings:
- Lack of dependency control means and namespaces isolation;
- Lack of modularity and the components management system;
- Lack of standard general purpose functions libraries, file system interaction and input-output devices control functions;
- Software developed with the use of interpreted languages is considerably slower than with the use of traditional system languages.
Node.JS development was started specifically for leveling these disadvantages
Node. JS application
Dependencies, package management, etc.
First two named JS shortcomings are effectively dealt with Node’s Unified API, allowing combining Node with browsers and Document Databases, and the “npm” – default Node’s packet manager.
Node’s audience is huge. Seriously huge. Immense community support brings tons of open-source libraries, some providing such supermodern functionality, we’re just looking forward to use. Industry is very favourable to Node.JS, there’s even a NodeConf held each Summer. Community has developed several frameworks assisting all the input-output issues and providing support for accelerating software development.
V8 in Node.JS development environment
So as you see, Node.JS is a modern and powerful instrument, highly supported in industry and providing great possibilities for web-server development. Highly skilled team of Node.JS pros is very effective and able to show record breaking development terms.