Everything To Know About NodeJs
While several activities take place in the
background or the backend of our website, the user only really interacts with
the front end of any program, not the backend. Any program essentially consists
of three components: the front end, with which users interact, the back end
server, and the back end database. We can utilize relational or non-relational
databases for backend databases, and NodeJS, Java, Python, etc. for backend
servers.
What is
Node js?
We’ll look into what Node js is.
Every time a client uses the client side of an
application to request something, the request is first sent to the server,
where it is processed or calculated to validate the client-side request. Once
all of this validation is complete, a response is then provided to the client
side. This NodeJs JavaScript framework is used for all of these calculations
and processing. NodeJS is essentially utilized as an open-source and
cross-platform JavaScript runtime environment for our web apps that are run
outside of the client's browser. This is what we use to run server-side apps.
It is employed in developing I/O-intensive applications, including those for
online chat, video streaming, and other uses. NodeJs is a framework that is
used in many well-established tech major corporations and recent start-ups.
What is
the Need for NodeJs?
NodeJs is constructed using the V8 engine from
Google Chrome, which results in an extremely speedy execution time. NodeJs is
highly helpful for developing real-time and data-intensive web apps because it does
not require waiting for an API to return data. Because of its wholly
asynchronous nature, it is completely non-blocking. Due to greater code
synchronization between the client and server due to sharing the same code
base, NodeJs speeds up the loading time for audio and video files. Since NodeJs
is open-source and is merely a JavaScript framework, beginning the development
of projects with it is quite simple for developers who are already familiar
with JavaScript.
Components
of NodeJs
Modules
A Node.js application can use modules, which
are essentially JavaScript libraries, to include a collection of functions. Use
the require() function with the module name in the parenthesis to include a
module in a Node.js application.
Consoles
The console is a module that offers a
debugging technique that is comparable to the fundamental JavaScript console
offered by web browsers. Messages are printed to stderr and stdout.
Clusters
The foundation of Node.js is single-threaded
programming. A module called Cluster enables multi-threading by generating
child processes that simultaneously run on the same server port and share the
same server.
Global
In Node.js, all modules have access to global
objects. These items include strings, modules, functions, and more.
Error
Handling
There are four types of errors in NodeJs. They
are listed below.
i)Standard
JavaScript Libraries
ii)
System Errors
iii)
User-Specific Errors
iv)
Assertion Errors
Streaming
The process of reading or writing data
continuously by Objects is called
Streaming. The four types of streams are listed below:
i)
Readable
The process of reading data from streams is
called Readable Streams.
ii)
Writable
These are the streams that can be used to
write data.
iii)
Duplex
Both Readable and Writeable data streams are
called Duplex Streams.
iv)
Transform
Streams that let data manipulation while being
read or written are called Transform Streaming.
Buffer
A module called Buffer enables the handling of
streams with just binary data.
Domain
Errors that go unhandled are intercepted by
the domain module. These mistakes are stopped using two techniques:
Internal Binding: The run function is where
the code for the error emitter is executed.
External Binding: Using the add method, an
error emitter is explicitly added to a domain.
DNS
This module is used to connect to the DNS
server and solve the name resolution problem.
Debugger
A built-in debugging client can use the
debugging tool that is part of Node.js. Although the Node.js debugger is not
feature-rich, it does provide basic code inspection. By placing the 'inspect'
keyword before the name of the JavaScript file, the debugger can be used in the
terminal.
Conclusion
In this article, we have discussed the
definition of NodeJs, the components of NodeJs, and the need for NodeJs. NodeJs
is used as a Front-End framework, and also as a Back-End framework. Front-End,
and Back-End frameworks, both form the backbone of Full Stack. And hence, the
need for Full Stack Developers to upskill himself/herself with Full Stack technologies. Full Stack developers are in great
demand by top product-based organizations. Where can a candidate equip
himself/herself with the right skillset relating to Full Stack? There are many institutes in our country that train
candidates in the domain of Full Stack, but
at SkillSlash, an online based
learning platform, candidates are provided 1:1 mentorship and are made to work
on live projects. Skillslash also has in store, exclusive courses like Data Science Course In Delhi, Data
science course in Nagpur and Data
science course in Mangalore to ensure aspirants of each domain have a great
learning journey and a secure future in these fields. Skillslash has developed
a massive online presence in other domains too. To find out how you can make a
career in the IT and tech field with Skillslash, contact the student support
team.
Comments
Post a Comment