This document provides an overview and introduction to Node.js server-side JavaScript. It includes an agenda, background on Node.js and how it uses non-blocking I/O and event loops. Sample code is shown to demonstrate basic Node.js functionality like creating HTTP servers in just a few lines of code. Key concepts like modules and applicability are discussed. Real-world uses of Node.js in companies like LinkedIn and eBay are also mentioned.
Its a presentation about node.js. Here I have covered the basic things of node.js. Like what is node.js how it can be used. and explanation about some node.js frameworks
Node.js Tutorial for Beginners | Node.js Web Application Tutorial | Node.js T...Edureka!
This Edureka "Node.js tutorial" will help you to learn the Node.js fundamentals and how to create an application in Node.js. Node.js is an open-source, cross-platform JavaScript runtime environment for developing a diverse variety of server tools and applications. Below are the topics covered in this tutorial:
1) Client Server Architecture
2) Limitations of Multi-Threaded Model
3) What is Node.js?
4) Features of Node.js
5) Node.js Installation
6) Blocking Vs. Non – Blocking I/O
7) Creating Node.js Program
8) Node.js Modules
9) Demo – Grocery List Web Application using Node.js
Its a presentation about node.js. Here I have covered the basic things of node.js. Like what is node.js how it can be used. and explanation about some node.js frameworks
Node.js Tutorial for Beginners | Node.js Web Application Tutorial | Node.js T...Edureka!
This Edureka "Node.js tutorial" will help you to learn the Node.js fundamentals and how to create an application in Node.js. Node.js is an open-source, cross-platform JavaScript runtime environment for developing a diverse variety of server tools and applications. Below are the topics covered in this tutorial:
1) Client Server Architecture
2) Limitations of Multi-Threaded Model
3) What is Node.js?
4) Features of Node.js
5) Node.js Installation
6) Blocking Vs. Non – Blocking I/O
7) Creating Node.js Program
8) Node.js Modules
9) Demo – Grocery List Web Application using Node.js
In this article, I’d like to tell you about 7 Node JS project ideas that will help you train your skills, build an impressive portfolio, and get hired.
For some time, I’m publishing the lists of projects that you can use to practice the coding skills that you’ve just learned. I was focusing mostly on frontend technologies, but today I decided to jump to the Javascript backend framework called Node JS.
How to create a OSGi Servlet that runs on a Domino server using code from another plugin. Extra is a web app servlet which runs on every other Java Server
1> What is node
2> What is node.js
3> Installation steps
4> Create first Node application
5> How it works ?
6> Why node is so popular ?
7> Where to use ?
8> Advantages
9> Disadvantages
10> Statistics
Node.js is a server-side JavaScript environment that uses an asynchronous event-driven model. Here you will find 8 best time-tested Node.js file system tools, which are amply used by Node.js developers. You’ve come to the right place if you are going to streamline routine tasks related to a file system.
Why You Should Use MERN Stack for Startup Apps?Pixel Crayons
If you have no idea what MERN stands for, check out my explanation in this article first! This insightful guide will help you learn about the benefits of using the MERN stack and why it’s perfect for your next web application project.
In a nutshell, The MERN Stack refers to four technologies: MongoDB, ExpressJS, ReactJS, and Node.js. MongoDB is a document-oriented DBMS that allows you to store data in JSON-like format.
NodeJS is an open source, cross platform run time environment for server side and networking application. NodeJS is popular in development because front & back end side both uses JavaScript Code.
Typesafe trainer and consultant Will Sargent describes just how Play Framework is so "fast" for Java and Scala production apps.
More Play, Akka, Scala and Apache Spark webinars, presentations, and videos:
http://typesafe.com/resources/videos
Android development changed significantly in 2017 (Kotlin, Architecture Components and much more). Some of the most tricky and debatable questions now are: how to start a scalable project from scratch? How to decide which technology/library to use?
The HERE WeGo App team has worked for years to define a sophisticated release and development process, with a high level of automation that allowed to quickly followup on user issues and actively develop features. But legacy code and a large framework made it difficult to move even faster.
Lessons learned? We will discuss how to start over with all the learnings on a greenfield project.
Technologies that will be covered: Kotlin, Jenkins, JobDsl, Architecture Components, GraphQL, gRPC and more.
Bringing Interactivity to Your Drupal Site with Node.js IntegrationAcquia
Drupal is a powerful, flexible platform for building applications, but not something that handles realtime notifications easily. Node.js is a breath of fresh air in the Open Source web server landscape. It makes writing applications that handle thousands of open connections at the same time easily.
The Nodejs module integrates Drupal with Node.js, allowing for the best of both worlds. Realtime chat, push notifications and help desk functionality can all be easily added to your Drupal site via the Nodejs module, without the usual scalability and performance issues associated with these technologies on the LAMP stack.
Fundamental of Node.JS - Internship Presentation - Week7Devang Garach
Fundamental of Node.JS - Internship Presentation - Week 7
What is Node.JS
Features of Node.JS
Node.JS Architecture
Core modules in Node.JS
Node.JS Installation
npm
Creating first node.js application
Content that helps to understand bitcoin and blockchain. Starts with currency basics, to clear the fact that bitcoin is not doing anything tangentially wrong. Followed by that bitcoin is covered and blockchain in detail.
In this article, I’d like to tell you about 7 Node JS project ideas that will help you train your skills, build an impressive portfolio, and get hired.
For some time, I’m publishing the lists of projects that you can use to practice the coding skills that you’ve just learned. I was focusing mostly on frontend technologies, but today I decided to jump to the Javascript backend framework called Node JS.
How to create a OSGi Servlet that runs on a Domino server using code from another plugin. Extra is a web app servlet which runs on every other Java Server
1> What is node
2> What is node.js
3> Installation steps
4> Create first Node application
5> How it works ?
6> Why node is so popular ?
7> Where to use ?
8> Advantages
9> Disadvantages
10> Statistics
Node.js is a server-side JavaScript environment that uses an asynchronous event-driven model. Here you will find 8 best time-tested Node.js file system tools, which are amply used by Node.js developers. You’ve come to the right place if you are going to streamline routine tasks related to a file system.
Why You Should Use MERN Stack for Startup Apps?Pixel Crayons
If you have no idea what MERN stands for, check out my explanation in this article first! This insightful guide will help you learn about the benefits of using the MERN stack and why it’s perfect for your next web application project.
In a nutshell, The MERN Stack refers to four technologies: MongoDB, ExpressJS, ReactJS, and Node.js. MongoDB is a document-oriented DBMS that allows you to store data in JSON-like format.
NodeJS is an open source, cross platform run time environment for server side and networking application. NodeJS is popular in development because front & back end side both uses JavaScript Code.
Typesafe trainer and consultant Will Sargent describes just how Play Framework is so "fast" for Java and Scala production apps.
More Play, Akka, Scala and Apache Spark webinars, presentations, and videos:
http://typesafe.com/resources/videos
Android development changed significantly in 2017 (Kotlin, Architecture Components and much more). Some of the most tricky and debatable questions now are: how to start a scalable project from scratch? How to decide which technology/library to use?
The HERE WeGo App team has worked for years to define a sophisticated release and development process, with a high level of automation that allowed to quickly followup on user issues and actively develop features. But legacy code and a large framework made it difficult to move even faster.
Lessons learned? We will discuss how to start over with all the learnings on a greenfield project.
Technologies that will be covered: Kotlin, Jenkins, JobDsl, Architecture Components, GraphQL, gRPC and more.
Bringing Interactivity to Your Drupal Site with Node.js IntegrationAcquia
Drupal is a powerful, flexible platform for building applications, but not something that handles realtime notifications easily. Node.js is a breath of fresh air in the Open Source web server landscape. It makes writing applications that handle thousands of open connections at the same time easily.
The Nodejs module integrates Drupal with Node.js, allowing for the best of both worlds. Realtime chat, push notifications and help desk functionality can all be easily added to your Drupal site via the Nodejs module, without the usual scalability and performance issues associated with these technologies on the LAMP stack.
Fundamental of Node.JS - Internship Presentation - Week7Devang Garach
Fundamental of Node.JS - Internship Presentation - Week 7
What is Node.JS
Features of Node.JS
Node.JS Architecture
Core modules in Node.JS
Node.JS Installation
npm
Creating first node.js application
Content that helps to understand bitcoin and blockchain. Starts with currency basics, to clear the fact that bitcoin is not doing anything tangentially wrong. Followed by that bitcoin is covered and blockchain in detail.
The Six Highest Performing B2B Blog Post FormatsBarry Feldman
If your B2B blogging goals include earning social media shares and backlinks to boost your search rankings, this infographic lists the size best approaches.
Each technological age has been marked by a shift in how the industrial platform enables companies to rethink their business processes and create wealth. In the talk I argue that we are limiting our view of what this next industrial/digital age can offer because of how we read, measure and through that perceive the world (how we cherry pick data). Companies are locked in metrics and quantitative measures, data that can fit into a spreadsheet. And by that they see the digital transformation merely as an efficiency tool to the fossil fuel age. But we need to stretch further…
“Node's goal is to provide an easy way to build scalable Network programs”
Asynchronous i/o framework
Core in c++ on top of v8
Rest of it in javascript
Swiss army knife for network Related stuffs
Can handle thousands of Concurrent connections with Minimal overhead (cpu/memory) on a single process
It’s NOT a web framework, and it’s also NOT a language
• Created by Ryan Dahl in 2009
• Development && maintenance sponsored by Joyent
• License MIT
• Last release : 0.10.31
• Based on Google V8 Engine
• +99 000 packages
"You Don't Know NODE.JS" by Hengki Mardongan Sihombing (Urbanhire)Tech in Asia ID
Hengki Sihombing is the Co-Founder and CTO Urbanhire, a technology company who provides Software as a Service (SaaS) for Hiring and Recruitment and also Job search agregator for jobseeker.
Before founding Urbanhire, Hengki had over 10 years of professional experience in software development in companies like: OLX, Wego, Merah Putih Inc, GushCloud. Hengki also actively participates in various Technology communities. He founded and leads the JakartaJS Community with more than 1900 Members.
***
This slide was shared at Tech in Asia Product Development Conference 2017 (PDC'17) on 9-10 August 2017.
Get more insightful updates from TIA by subscribing techin.asia/updateselalu
Quick introduction about Node.js, what is it? What is Node not?
What is V8 engine?
How to Install Node.js
github: https://github.com/elbassel/MEAN-Training.git
Scalable server component using NodeJS & ExpressJSAndhy Koesnandar
Talk that Andhy Koesnandar and Oby Sumampouw gave at Jakarta JS 12-15-2014
Title: Scalable server component using NodeJS & ExpressJS
Description: Today is a wonderful time to be a JS developer. JS is the lingua franca in the web browser, apps and now server. I am going to talk about How JS developers can build server scalable component using NodeJS + ExpressJS .
About Cermati:
Cermati is a financial comparison site in Indonesia. We compare credit cards and promotions
An Introduction to Node.js Development with Windows AzureTroy Miles
Node.js has taken off in popularity. Find out why major internet companies like Yammer, CouchOne, DocumentCloud, and LinkedIn are using Node to power their servers. And why Microsoft added support for it to Azure. In this session we will build a simple yet functional web server using Node, enhance it using plugins known as Modules, and hopefully explain why Node is such a powerful new web server paradigm.
An absolute beginners guide to node.js . Done for a presentation at college. The presentation contains data from various sources ,sources are noted at the end slide. please inform me any mistakes ,since at that time i was in a bit of hurry :)
This is a presentation I prepared for a local meetup. The audience is a mix of web designers and developers who have a wide range of development experience.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
3. • Quick collation of material from various allowed sources
– net, books & slides – to introduce the team to Node.JS
• To provide a glimpse of Node.JS
About
For
Folks who don’t know anything about Node.JS
4. Background
• Node.js runs on V8 Javascript Engine.
• V8 is Google’s open source engine; written in C++.
• Created by Ryan Dahl in 2009.
• Runs on Linux systems and Windows systems.
• Per Node.js
• IO is too costly
• Thread per connection is too memory intensive
!! (Apache creates one thread per connection)
4
5. Introduction
• Node.js is ‘server-side JavaScript’.
• High-performance network applications framework,
• Well optimized for high concurrent environments.
• Command line tool to execute nodeJS code.
• Written with 40% JS and 60% C++ code.
• Lightweight - Uses an event-driven, non-blocking I/O model.
• Event-loops / Non-blocking IO via JavaScript’s callbacks.
• Programs for Node.js are written in JavaScript [no DOM
implementation ]
• Everything inside Node.js runs in a single-thread.
• Yes!! Its single threaded. Below code will block the
server for a second.
• All but your code is multi-threaded !!!
5
6. ‘Hello Node.js’
• Type your JS code, open cmd/terminal and type
this:
‘node FILE_NAME.js’
• To execute the code
• ‘hello world’
var sys = require(“sys”);
setTimeout(function(){
sys.puts(“world”);},
3000);
sys.puts(“hello”);
//it prints ‘hello’ first and waits for 3 seconds and
then prints ‘world’
6
7. Event Loops
7
Event-loops are the core of event-driven programming, almost
all the UI programs use event-loops to track the user event, for
example: Clicks, Ajax Requests etc.
Client
Event
loop
(main thread)
C++ Thread pool
(worker threads)
Clients send HTTP requests
to Node.js server
An Event-loop is woken up by OS,
passes request and response objects
to the thread-pool
Long-running jobs run
on worker threads
Response is sent
back to main thread
via callback
Event loop returns
result to client
8. Non Blocking I/O
• Traditional I/O
• Non-traditional, Non-blocking I/O
8
var result = db.query(“select name from student”);
computeStudentExamResult(result); //wait for
result!
informResults(); //execution is blocked!
db.query(“select name from student”,function
(result){
computeStudentExamResult(result); //wait for
result!
});
informResults(); //executes without any delay!
9. Few things with Node.js
• You can create an HTTP server and print ‘hello world’ on the
browser in just 4 lines of JavaScript.
• You can create a TCP server similar to HTTP server, in just 4
lines of JavaScript. (Example included)
• You can create a DNS server.
• You can create a Static File Server.
• You can create a Web Chat Application like GTalk in the
browser.
• Node.js can also be used for creating online games,
collaboration tools or anything which sends updates to the
user in real-time.
9
10. Servers… in 3 lines of code
10
• Create HTTP Server and print ‘Hello World’ :
• TCP server on port 9000 that echoes the
request:
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200,
{'Content-Type': 'text/plain'});
res.end('Hello Worldn'); })
.listen(5000, "127.0.0.1");
var net = require('net');
net.createServer(function (socket) {
socket.write("Echo serverrn");
socket.pipe(socket); })
.listen(9000,"127.0.0.1");
11. Node Modules
• Node.js heavily relies on modules, in previous
examples require keyword loaded the http & net
modules.
• Creating a module is easy, just put your JavaScript
code in a separate js file and include it in your code
by using keyword require, like:
var mod = require(‘./modulex’);
• Libraries in Node.js are called packages and they
can be installed by typing
npm install “package_name”; //package should be
available in npm registry @ nmpjs.org
• NPM (Node Package Manager) comes bundled with
Node.js installation.
11
12. Applicability
• Node.js is good for creating streaming based real-
time services, web chat applications, static file
servers etc.
• If you need high level concurrency and not worried
about CPU-cycles.
• If you are great at writing JavaScript code because
then you can use the same language at both the
places: server-side and client-side.
• High productivity (as long as the developer
understands/thinks in terms of callbacks, async I/O)
• Node.js principle – IO is costly.
• http://blog.mixu.net/2011/02/01/understandin
g-the-node-js-event-loop/
12
13. Not Applicable For
13
• Computation intensive tasks on server side, as the
event-loops are CPU hungry.
• Still in beta – so be cautious !!
• Can’t guarantee backward compatibility. Not a 1.0
• No match for enterprise level application
frameworks like Spring(java), Django(python), etc.
• Not battle tested yet!!!
14. Node.js in the Industry
• LinkedIn :
• On the server side, our entire mobile software stack is
completely built in Node. One reason was scale. The
second is Node showed us huge performance gains.
• Clouds 9 IDE
• eBay :
http://www.ebaytechblog.com/2013/05/17/how-we-built-ebays-first-
node-js-application/
For more refer - http://nodejs.org/industry/
14