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31 results for: nodes

Top JavaScript libraries and frameworks part 1

JavaScript libraries and frameworks make it easy to develop websites and applications with a wide variety of features and functionality, all with dynamic, flexible and engaging features. According to a 2020 StackOverflow survey, JavaScript remains the most widely used programming language (for the eighth year), with 67.7% of respondents using it. Its…

Category : Javascript   06-05-2021   by Janeth Kent

Cumulative Layout Shift, what is and How to optimize CLS

Cumulative Layout Shift, one of the new Core Web Vitals metrics,  is the first metric that focuses on user experience beyond performance. Unexpected movement of web page content is a major source of irritation for users on the web. The new cumulative design change metric helps developers understand the impact of…

Category : Seo & sem   14-01-2021   by Luigi Nori

What is DNS Blockchain and how to use it

To be able to navigate the Internet, to enter a website and have it show us all the content we want and search for, certain functions and characteristics are necessary. One of these key points is the DNS. It is what translates domain names into IP addresses, which prevents us…

Category : Security   28-12-2020   by Janeth Kent

Dark Web: the creepy side of the Internet is not as dark as believed

People who surf the Dark Web are not necessarily looking for something illegal. Most people want to protect their privacy. And according to a recent study, 93 percent only use websites that are freely accessible. It is almost impossible not to leave traces on the Internet and therefore reveal a lot…

Category : Security   22-12-2020   by Silvia Mazzetta

How to Use Bitcoin: mining, wallets, payments

You have certainly heard of Bitcoin, the virtual currency that periodically makes people talk about itself because of its innovative and particular nature. In this case, you have probably also wondered how it is possible to get and subsequently spend Bitcoins, and if it is something useful, as well as…

Category : Technology   10-12-2020   by Silvia Mazzetta

Hashmap: Overflow Lists

In this short series of articles we will go to see how it is possible to create the Hashmap data structure in C. In the implementation we're going to use the doubly concatenated lists as auxiliary data structures. Let's look at a possible implementation.  Header file Let's first have a look to what…

Category : C language   18-06-2020   by Alessio Mungelli

Data structures in Java - Linked Lists

With 2020 we are going to look at a new aspect of programming: data structures. It is often the case that everyone uses structures provided by the various programming languages. The objective will be to have a general idea of how they work and their internal mechanisms. Often we will…

Category : Java   22-10-2020   by Alessio Mungelli

How to Browse the Internet Anonymously: 6 tips

Most of the actions you take online are not as private as you might imagine. Nowadays, countless people and groups try to follow our online behaviour as closely as possible. Our ISPs, our network administrators, our browsers, search engines, the applications we have installed, social networks, governments, hackers and even the…

Category : Security   16-09-2020   by Silvia Mazzetta

How to configure Tor to browse the deep web safely

Today we explain how to set up Tor to browse safely, and we'll share some links to safe sites on the deep web to get you started. Many already know that not everything on the Internet appears in Google, Yahoo, Bing or other search engines, and that accessing much of this…

Category : Security   12-08-2020   by Silvia Mazzetta

Introduction to Network Theory

Modern network theory was introduced at the end of the nineties by the PhD student Reka Albert and then monopolized by her tutor L.A. Barabasi, who made an empire out of it. The idea was not new, network theory is based on graph theory and graph theory had been already introduced…

Category : Networking   03-08-2020   by Paolo Masucci

A collection of interesting networks and technology aiming at re-decentralizing the Internet

The decentralised web, or DWeb, could be a chance to take control of our data back from the big tech firms. So how does it work? Take a look at this collection of projects aimed to build a decentralized internet. Cloud BitDust - is decentralized, secure and anonymous on-line storage, where only…

Category : Networking   27-08-2020   by Janeth Kent

Awesome JavaScript Games and Js Software to create Games

Best sites js13kGames 2019 - Highlights from the js13kGames 2019 competition. js13kGames 2018 - 13 Games in ≤ 13kB of JavaScript. js13kGames 2017 - Build a game in 13kB or less with js13kGames. Adventure Triangle: Back To Home - You are lost in the cave. Try to get out and back to home. Sometimes it…

Category : Javascript   30-06-2020   by Janeth Kent

Dark Web: how to access, risks and contents

You've probably heard of the Dark Web before, but do you really know what the Dark Web is, or what it consists of? Do you know its risks? Which users use the Dark Web? What content is published? Would you know how to access the Dark Web safely? If you are reading…

Category : Security   13-06-2020   by Silvia Mazzetta

First steps into JavaScript – a practical guide

For those who are new to web development, surely the amount of new terminology can sometimes be discouraging. But when it comes to learning JS, some of the first new concepts you definitively should wrap your head around is the Document Object Model and what it implies. To keep it simple…

Category : Javascript   26-10-2021   by Iveta Karailievova

How to Install Node.js and NPM on Ubuntu 18.04

Node.js is a JavaScript platform for general programming that allows users to create network applications quickly. By leveraging JavaScript in both frontend and backend, Node.js makes development more uniform and integrated. Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine. runtime for easily building fast, scalable network applications. In this…

Category : Development   24-04-2020   by Luigi Nori

Java Sorting Algorithms: Merge Sort

Today we are going to analyze one of the most used sorting algorithms: the Merge Sort. It is part of the Divide and Conquer family, just like the  Quick Sort. Merge Sort offers a better performance despite of the Quick Sort since its complexity remains O(n log n) keeping performances. It is also called "algorithm by fusion" The main defect of the Merge…

Category : Java   14-12-2019   by Alessio Mungelli

Best Javascript front-end hacking cheatsheets

Best Javascript front-end hacking cheatsheets

JavaScript has a extremely high potential to build cutting-edge web applications. But it's really hard to memorize it by heart. The JavaScript cheat sheets therefore act perfectly as a reminder and a comprehensive reference for developers. All popular and special purpose cheat sheets have been discussed above. You now have…

Category : Javascript   06-05-2020   by Janeth Kent

DOM vs Virtual DOM (Vue's challenge)

DOM vs Virtual DOM (Vue's challenge)

Most of the Javascript frameworks like Vue, React and Ember implement a “virtual DOM”. While it seems like some thing from a technological know-how fiction, its number one motive for present is to expand the speed and proficiency of DOM updates. It offers a few more advantages as well. What the DOM actually is (a reminder) We have a tendency consider the DOM as the HTML document it represents. but without a doubt the DOM is a tree-like data structure that comes into existence as soon as an…

Category : Javascript   05-10-2018   by Janeth Kent

JavaScript Manual for Beginners

JavaScript Manual for Beginners

The JavaScript Manual shows you how to use JavaScript and gives an overview of the language. I   GETTING STARTED ABOUT Created by Netscape in 1995 as an extension of HTML for Netscape Navigator 2.0, JavaScript had as its main function the manipulation of HTML documents and form validation. Before winning this name so…

Category : Javascript   04-09-2018   by Janeth Kent

Best Websites to Learn Coding Online

Best Websites to Learn Coding Online

You know and we know that it’s totally possible to learn to code for free... If you can teach yourself how to write code, you gain a competitive edge over your peers, you can think more algorithmically and thus can tackle problems more efficiently. But what are the best resources to achieve…

Category : Programming   19-06-2018   by Janeth Kent

Setup FTP server with VSFTPD in Ubuntu 16.04

Setup FTP server with VSFTPD in Ubuntu 16.04

Introduction FTP, short for File Transfer Protocol, is a network protocol that was once widely used for moving files between a client and server. It has since been replaced by faster, more secure, and more convenient ways of delivering files. Many casual Internet users expect to download directly from their web…

Category : Servers   14-02-2017   by Janeth Kent

Getting started with Node.Js

Node.js is a JavaScript runtime environment (hence its .js termination in reference to the JavaScript language). This real-time runtime environment includes everything you need to run a program written in JavaScript. It also brings many benefits and solves many problems, so it would be more than interesting to take our…

Category : Javascript   06-05-2020   by Janeth Kent

Install Syncthing on Ubuntu 16.04 using Debian Repository

Install Syncthing on Ubuntu 16.04 using Debian Repository

Syncthing is a free continuous file synchronization tool that lets you synchronize your files across desktops, tablets, servers. It’s an open source alternative to the popular BitTorrent Sync (aka btsync) application. The creation, modification or deletion of files on one machine will automatically be replicated to your other devices. Syncthing…

Category : Servers   19-08-2016   by Janeth Kent

10 jQuery snippets every developer should know 

10 jQuery snippets every developer should know 

For this post, we would like to share with our readers 10 JQuery Code Snippets which we’ve collected that users can copy and paste directly into their themes by which to create some nice visual effects which will spruce up your website. Enjoy ! 1. Smooth Scrolling for Internal Links $('a').bind('click.smoothscroll',function (e) { …

Category : Web design   13-02-2014   by Janeth Kent

How to Easily Install Hadoop in Ubuntu 12.10

How to Easily Install Hadoop in Ubuntu 12.10

This tutorial covers the installation steps of Apache Hadoop 1.0 and 2.0 in Ubuntu Linux. I will also go through the configuration for running it on pseudo-distributed mode. Pre-Requisites Java 6 or later (Hadoop is written in Java) Linux OS (Windows is supported only in development mode. Other flavors of…

Category : Databases   11-07-2013   by Janeth Kent

Useful list of commands for linux server management

Useful list of commands for linux server management

List of checks that you can perform on a linux server to try and figure out why it keeps going down Disk Space: df -h (Make sure you have enough disk space) Memory: free -m (Check you're not out of memory) Processes / Load average top (shift + m) htop (Check for processes that are taking up a lot of…

Category : Networking   09-07-2013   by Janeth Kent

Setup SSL Certificate on Apache and Ubuntu 12.04

Setup SSL Certificate on Apache and Ubuntu 12.04

How to Create a SSL Certificate on Apache for Ubuntu 12.04   About SSL Certificates A SSL certificate is a way to encrypt a site's information and create a more secure connection. Additionally, the certificate can show the virtual private server's identification information to site visitors. Certificate Authorities can issue SSL certificates that…

Category : Networking   02-07-2013   by Janeth Kent

Setting the Hostname (FQDN) in Linux Servers

Setting the Hostname (FQDN) in Linux Servers

Here we will show how to set your system's hostname and fully qualified domain name (FQDN). Your hostname should be something unique. Some people name their servers after planets, philosophers, or animals. Note that the system's hostname has no relationship to websites or email services hosted on it, aside from providing…

Category : Networking   29-05-2013   by Janeth Kent

Apache:Setup a SSL Certificate with Thawte

Apache:Setup a SSL Certificate with Thawte

Here is a short tutorial how to set up a Thawte SSL 123 SSL certificate (a domain-only validation SSL Certificate). In a nutshell, it takes two steps: First, you need to create your private key and the certificate signing request to request the certificate. In a second step you need…

Category : Networking   11-04-2013   by Janeth Kent

Install and Setup SSL in Webmin and Apache

Install and Setup SSL in Webmin and Apache

  SSL is a protocol for making secure, authenticated connections across an insecure network like the Internet. It encrypts network traffic, so that an attacker cannot listen in on the network and capture sensitive information such as passwords and credit card numbers. It allows servers to authenticate themselves to clients, so…

Category : Networking   11-04-2013   by Janeth Kent

Distributed Storage Across Multiple Servers (Nodes) With GlusterFS 3.2.x On Ubuntu 12.10

Distributed Storage Across Multiple Servers (Nodes) With GlusterFS 3.2.x On Ubuntu 12.10

  This tutorial shows how to combine four single storage servers (running Ubuntu 11.10) to one large storage server (distributed storage) with GlusterFS. The client system (Ubuntu 11.10 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling…

Category : Operating systems   11-04-2013   by Janeth Kent

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