This document provides a high-level overview of JavaScript and Node.js. It discusses how JavaScript originated as a browser scripting language but is now widely used for server-side applications through Node.js. Node.js uses Google's V8 JavaScript engine and allows JavaScript code to run outside of browsers. Popular Node.js frameworks like Express.js are introduced. Key features of JavaScript like asynchronous programming and Node.js concepts like modules, middleware, and MongoDB are summarized at a high level.
Juju, LXC, OpenStack: Fun with Private CloudsSameer Verma
Description: Private clouds fill an interesting space in the cloud roadmap. They can provide a scalable, reliable, fault-tolerant cloud platform on your own infrastructure, and can be balanced with public cloud offerings. We will look at three technologies. OpenStack is a cloud operating system that controls large pools of compute, storage, and networking resources throughout a datacenter, all managed through a dashboard that gives administrators control while empowering their users to provision resources through a web interface. Juju, a cloud orchestration platform from Ubuntu, enables you to build entire environments in the cloud with only a few commands on public clouds like Amazon Web Services and HP Cloud, to private clouds built on OpenStack. LXC is the userspace control package for Linux Containers, a lightweight virtual system mechanism sometimes described as “chroot on steroids”. LXC builds up from chroot to implement complete virtual systems, adding resource management and isolation mechanisms to Linux’s existing process management infrastructure. How cool would it be, to walk around with a private cloud on your laptop?
The Dark Side of Single Page ApplicationsDor Kalev
The story of all the pitfalls we had while transferring FTBpro.com from the good old web to a Backbone single page application... and all the great solutions we've came up with
Juju, LXC, OpenStack: Fun with Private CloudsSameer Verma
Description: Private clouds fill an interesting space in the cloud roadmap. They can provide a scalable, reliable, fault-tolerant cloud platform on your own infrastructure, and can be balanced with public cloud offerings. We will look at three technologies. OpenStack is a cloud operating system that controls large pools of compute, storage, and networking resources throughout a datacenter, all managed through a dashboard that gives administrators control while empowering their users to provision resources through a web interface. Juju, a cloud orchestration platform from Ubuntu, enables you to build entire environments in the cloud with only a few commands on public clouds like Amazon Web Services and HP Cloud, to private clouds built on OpenStack. LXC is the userspace control package for Linux Containers, a lightweight virtual system mechanism sometimes described as “chroot on steroids”. LXC builds up from chroot to implement complete virtual systems, adding resource management and isolation mechanisms to Linux’s existing process management infrastructure. How cool would it be, to walk around with a private cloud on your laptop?
The Dark Side of Single Page ApplicationsDor Kalev
The story of all the pitfalls we had while transferring FTBpro.com from the good old web to a Backbone single page application... and all the great solutions we've came up with
MEAN Stack is a full-stack JavaScript solution that helps you build fast, robust and maintainable production web applications using MongoDB, Express, AngularJS, and 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
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.
MongoDB Days Silicon Valley: Building Applications with the MEAN StackMongoDB
Presented by Jason Zucchetto, Curriculum Engineer, MongoDB
Experience level: Introductory
Walk through building a sample application with the MEAN stack (MongoDB-Express-Angular-Node.js). We'll start from the beginning, walking through every component of the MEAN stack, in building a modern web application. The presentation focuses on building MongoMart, a simple application for searching and viewing MongoDB merchandise. You'll walk away with a basic knowledge of MEAN stack components and how to leverage them in building applications.
The LAMP stack is a well know and ubiquitous web development stack, but have you heard of MEAN? It's an up and coming stack that's unified by a single language, JavaScript. Learn the basic components of the MEAN stack as well as practical use case and applications.
MEAN Stack is a full-stack JavaScript solution that helps you build fast, robust and maintainable production web applications using MongoDB, Express, AngularJS, and 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
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.
MongoDB Days Silicon Valley: Building Applications with the MEAN StackMongoDB
Presented by Jason Zucchetto, Curriculum Engineer, MongoDB
Experience level: Introductory
Walk through building a sample application with the MEAN stack (MongoDB-Express-Angular-Node.js). We'll start from the beginning, walking through every component of the MEAN stack, in building a modern web application. The presentation focuses on building MongoMart, a simple application for searching and viewing MongoDB merchandise. You'll walk away with a basic knowledge of MEAN stack components and how to leverage them in building applications.
The LAMP stack is a well know and ubiquitous web development stack, but have you heard of MEAN? It's an up and coming stack that's unified by a single language, JavaScript. Learn the basic components of the MEAN stack as well as practical use case and applications.
MEAN Stack is a full-stack JavaScript solution that helps you build fast, robust and maintainable production web applications using MongoDB, Express, AngularJS, and Node.js.
A quick overview on Node.js to see how Javascript is changing server programming : brief history & motivations, what makes NodeJS so special/popular/difficult, typical use cases, and a few popular tools around the NodeJs world : npm, Grunt, IISNode, Tools for Visual Studio, …
Since its first appearance in 2009, NodeJS has come a long way. Many frameworks have been developed on top of it. These all make our task easy and quick. It is us who need to decide which one to choose? So, here is the list of top 10 NodeJS frameworks that will help you build an awesome application.
As per the trends captured in the job market from the year and the technology popularity , the usage of node.js is set to take off this year to a whole new level. This blog is an insight into understanding node.js. Touch points from ground up covering the basics of the platform to advanced use cases will be covered. The key features across the different facets around building enterprise application with node.js will be covered. Interesting use cases will be discussed on how this powerful technology is being used across the globe. The targeted audience can range from intermediate to advanced developers who would like to learn and employ the technology, architects to use it effectively for solutioning and sales team who can leverage the advantages of the technology in proposing quicker time to market like never before.
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.
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
popular FULL stacks and full reference of an MEAN stack with real time applications and more.MEAN stack is mainly for single page web applications and have an professional dynamic web page.
JDD2015: Java Everywhere Again—with DukeScript - Jaroslav TulachPROIDEA
JAVA EVERYWHERE AGAIN—WITH DUKESCRIPT
For a long time, Java was perfect for creating cross-platform applications, but the advent of iPhone, iPad, and Android devices changed everything, resulting in a totally fragmented world. Catering to all these platform is troublesome and expensive. That’s why DukeScript was created: to make it easy to create cross-platform Java applications again. The goal of this hands-on lab is to create a cross-platform application from scratch that will run on iOS, Android, desktop, browser, and embedded devices such as the Raspberry Pi. You’ll learn about the Model-View-ViewModel (MVVM) architecture, which enables you to write and test business code totally independently of the view, and, finally, you’ll see it combined with a view to complete a working application.
IMPORTANT
Before conference, please follow the steps to prepare for the session:
- perform the Maven repository initialization by creating the archetype and building it as
described at DukeScript website
- also download NetBeans IDE (either latest beta or at least 8.0.2)
- Installing Android SDK rev. 19 or bringing own Mac Book with XCode installed can be also found beneficial
This 7-second Brain Wave Ritual Attracts Money To You.!nirahealhty
Discover the power of a simple 7-second brain wave ritual that can attract wealth and abundance into your life. By tapping into specific brain frequencies, this technique helps you manifest financial success effortlessly. Ready to transform your financial future? Try this powerful ritual and start attracting money today!
1.Wireless Communication System_Wireless communication is a broad term that i...JeyaPerumal1
Wireless communication involves the transmission of information over a distance without the help of wires, cables or any other forms of electrical conductors.
Wireless communication is a broad term that incorporates all procedures and forms of connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices.
Features of Wireless Communication
The evolution of wireless technology has brought many advancements with its effective features.
The transmitted distance can be anywhere between a few meters (for example, a television's remote control) and thousands of kilometers (for example, radio communication).
Wireless communication can be used for cellular telephony, wireless access to the internet, wireless home networking, and so on.
# Internet Security: Safeguarding Your Digital World
In the contemporary digital age, the internet is a cornerstone of our daily lives. It connects us to vast amounts of information, provides platforms for communication, enables commerce, and offers endless entertainment. However, with these conveniences come significant security challenges. Internet security is essential to protect our digital identities, sensitive data, and overall online experience. This comprehensive guide explores the multifaceted world of internet security, providing insights into its importance, common threats, and effective strategies to safeguard your digital world.
## Understanding Internet Security
Internet security encompasses the measures and protocols used to protect information, devices, and networks from unauthorized access, attacks, and damage. It involves a wide range of practices designed to safeguard data confidentiality, integrity, and availability. Effective internet security is crucial for individuals, businesses, and governments alike, as cyber threats continue to evolve in complexity and scale.
### Key Components of Internet Security
1. **Confidentiality**: Ensuring that information is accessible only to those authorized to access it.
2. **Integrity**: Protecting information from being altered or tampered with by unauthorized parties.
3. **Availability**: Ensuring that authorized users have reliable access to information and resources when needed.
## Common Internet Security Threats
Cyber threats are numerous and constantly evolving. Understanding these threats is the first step in protecting against them. Some of the most common internet security threats include:
### Malware
Malware, or malicious software, is designed to harm, exploit, or otherwise compromise a device, network, or service. Common types of malware include:
- **Viruses**: Programs that attach themselves to legitimate software and replicate, spreading to other programs and files.
- **Worms**: Standalone malware that replicates itself to spread to other computers.
- **Trojan Horses**: Malicious software disguised as legitimate software.
- **Ransomware**: Malware that encrypts a user's files and demands a ransom for the decryption key.
- **Spyware**: Software that secretly monitors and collects user information.
### Phishing
Phishing is a social engineering attack that aims to steal sensitive information such as usernames, passwords, and credit card details. Attackers often masquerade as trusted entities in email or other communication channels, tricking victims into providing their information.
### Man-in-the-Middle (MitM) Attacks
MitM attacks occur when an attacker intercepts and potentially alters communication between two parties without their knowledge. This can lead to the unauthorized acquisition of sensitive information.
### Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) Attacks
Bridging the Digital Gap Brad Spiegel Macon, GA Initiative.pptxBrad Spiegel Macon GA
Brad Spiegel Macon GA’s journey exemplifies the profound impact that one individual can have on their community. Through his unwavering dedication to digital inclusion, he’s not only bridging the gap in Macon but also setting an example for others to follow.
APNIC Foundation, presented by Ellisha Heppner at the PNG DNS Forum 2024APNIC
Ellisha Heppner, Grant Management Lead, presented an update on APNIC Foundation to the PNG DNS Forum held from 6 to 10 May, 2024 in Port Moresby, Papua New Guinea.
Multi-cluster Kubernetes Networking- Patterns, Projects and GuidelinesSanjeev Rampal
Talk presented at Kubernetes Community Day, New York, May 2024.
Technical summary of Multi-Cluster Kubernetes Networking architectures with focus on 4 key topics.
1) Key patterns for Multi-cluster architectures
2) Architectural comparison of several OSS/ CNCF projects to address these patterns
3) Evolution trends for the APIs of these projects
4) Some design recommendations & guidelines for adopting/ deploying these solutions.
3. JAVASCRIPT THEN…
• Developed in 1995 Netscape
to script it’s Navigator Browser
• Has zero* to do with Java
• Used in the early days of the
web to annoy the shit out of
people (and do things like form
validation, image rollovers, and
basic interactivity)
4. JAVASCRIPT NOW…
• Huge surge in popularity since 2005
thanks to countless innovations…
• Standardization (ECMA)
• Javascript libraries such as jQuery
• XHR / AJAX
• Better browsers powered by faster and
faster Javascript engines
9. THE V8 JAVASCRIPT ENGINE
• Developed by Google for the
Chrome browser in 2008
• Written in C++
• Compiles Javascript to
machine code before
execution vs. interpreting
the code
• Blew away the competition.
( 2008 Tests )
10. BECAUSE OF V8, WE HAVE NODE.JS
• Invented in 2009 by Ryan Dahl @ Joyent
• Uses the V8 Javascript engine at its core
• Node.js runtime contains core modules
that handle everything from HTTP,
Filesystem I/O, Cryptography, etc.
• Browser-specific items taken out
(Document, Window, etc)
• This allows us to run Javascript
anywhere…the command line…the server…
hardware…anywhere…
• Writing Javascript everywhere is awesome.
11.
12. AN OVERVIEW OF NODE.JS
• Create anything from command line utilities to lightweight API’s to
full-scale web applications.
• 3rd most popular project on GitHub
• Great for high-traffic applications,
• Not-so-great for high-CPU applications.
• Highly-active community
• Used (and endorsed) by many large corporations - Walmart, eBay,
Apple, etc…
13. NODE.JS SUCCESS STORIES
LinkedIn switched to Node.js from Rails for their mobile
traffic, reducing the number of servers from 30 to 3
(90% reduction) and the new system was up to 20x
faster.
PayPal are rolling out Node.js across their entire web
application and Node.js will be used almost everywhere
within 2 years.
On Black Friday, the Walmart servers didn’t go over 1%
CPU utilization and the team did a deploy in the middle
of the day with 200,000,000 users online.
For more companies and examples of Node.js in the wild: http://bit.ly/node-usage
14. NODE IS EVENT-DRIVEN
• Node runs on a single-threaded, non-blocking event loop.
• The event loop essentially contains a queue of callback functions.
• Once expensive operations like Disk I/O or DB connections are
finished, the callback function is executed.
• Radically different from blocking languages, like PHP.
17. NODE PACKAGE MANAGER
• Over 135,000 modules, extending the functionality of Node
• Everything from small utilities to full-fledged frameworks
• Comes bundled automatically with Node
• Provides for dependency management
• Easy to install a module: npm install moduleName
• Modules can be installed globally (with the “-g” flag) or embedded within
your project in the “node_modules” directory
• Modules can be used in a Node program using require(‘moduleName’)
18. PACKAGE.JSON
• Holds various metadata relevant to the
project (name, version, etc.)
• Used primarily for dependency-management
• Initialize an empty package.json file with
“npm init”
• Install dependencies for a project by running
“npm install” from the project root
• You can save dependencies to your project
automatically to package.json by typing
“npm install <module> --save”
20. • Web application framework, designed for building single-page, multi-page,
and hybrid web applications
• Built on top of another framework called Connect
• Similar to Sinatra (a ruby framework), provides MVC capabilities
• Minimalist, yet full-featured
• Built-in support for routing & various HTTP handlers, configuration,
session management, and middleware
• Amazing community
MY FAVORITE MODULE…EXPRESS.JS
24. EXPRESS.JS : MIDDLEWARE
• Middleware is a pipeline of code that gets called before your
request handler
• Express applications are basically a bunch of middleware calls
• Middleware is a function with access to the request object
(req), the response object (res), and the next middleware in
line in the request-response cycle of an Express application,
commonly denoted by a variable named next
• Middleware can:
• Execute any code.
• Make changes to the request and the response objects.
• End the request-response cycle.
• Call the next middleware in the stack.
28. RANDOM THINGS TO BE AWARE OF…
• The pyramid of doom aka “callback hell” —
http://callbackhell.com
(Async.js is one module that can help)
• Writing asynchronous code can be hard…you
have to think differently.
• Node.js vs. IO.js
• Node process can be kept alive with
modules like “Forever”
• Play around with free & easy hosting of Node
apps on Heroku
30. MONGODB : WE DON’T NEED NO JOINS
• Document-oriented, NoSQL database
• Goodbye table-based relational database structures…Hello JSON-like
documents with dynamic schemas
• Highly performant when MongoDB’s awesome indexing support is used
• Highly available, with failover and replication built-in
• A natural fit for Node and Express applications
• Uses JSON for queries
• Did I mention no joins?
32. MONGODB : QUERY WITH JSON!
SQL Query
mongoDB Query
SELECT * FROM users WHERE last_name="gullion"
db.users.find({
"last_name": "gullion"
});
33. MONGODB : QUERY WITH JSON!
SQL Query
mongoDB Query
SELECT * FROM students WHERE GPA > 2.5 AND
major = "comp sci"
db.students.find({
"GPA": {
"$gt": 2.5
},
"major": "comp sci"
});
34. • Command-line utilities
• Real-time applications
• Apps with many concurrent users
• APIs
Good For:
• CPU-intensive apps
• Simple HTML websites
Not So Good For:
Node is not a framework, it is a platform.
IN SUMMARY…