What is AWS Cheat Sheet..? Amazon Web Services (AWS) is a provider of cloud services offering easy access to a range of useful computing resources. All of it is offered on an on-demand basis, which is highly cost efficient. It is recommended that IT practitioners embrace AWS and if you are one of them, you will have to implement newer...

Custom directives are used in AngularJS to extend the functionality of HTML. Custom directives are defined using the "directive" function. A custom directive simply replaces the element for which it is activated. AngularJS application during bootstrap finds the matching elements and does one time activity using its compile() method of the custom...

Python Pandas Tutorial  Pandas is an open-source, BSD-licensed Python library providing high-performance, easy-to-use data structures and data analysis tools for the Python programming language. Python with Pandas is used in a wide range of fields including academic and commercial domains including finance, economics, Statistics,...

Python Cheat Sheet Tutorial  Python is a general-purpose interpreted, interactive, object-oriented, and high-level programming language. It was created by Guido van Rossum during 1985- 1990. Like Perl, Python source code is also available under the GNU General Public License (GPL). This tutorial gives enough understanding on Python...

Git is a distributed revision control and source code management system with an emphasis on speed. Git was initially designed and developed by Linus Torvalds for Linux kernel development. Git is a free software distributed under the terms of the GNU General Public License version 2. This tutorial explains how to use Git for project version...

A tuple is a collection of objects which are ordered and immutable. Tuples are sequences, just like lists. The differences between tuples and lists are, the tuples cannot be changed unlike lists and tuples use parentheses, whereas lists use square brackets.Creating a tuple is as simple as putting different comma-separated values. Optionally you...

Introduction to Big Data Big Data is a collection of large data sets that cannot be processed using standard computing techniques. It is not a simple technique or method but involves a lot of business and technology fields. The term ‘big data’ is self-explanatory − a collection of huge data sets that normal computing techniques cannot...

What is Chef? Chef is a configuration management technology developed by Opscode to manage infrastructure on physical or virtual machines. It is an open source developed using Ruby, which helps in managing complex infrastructure on the fly. This tutorial provides a basic understanding of the infrastructure and fundamental concepts of managing...

What is Docker? Plainly put, Docker is an open-source technology used mostly for developing, shipping, and running applications. With it, you can isolate applications from their underlying infrastructure so that software delivery is faster than ever. Docker’s main benefit is to package applications in “containers,” so they’re portable...

What is Apache Cassandra? Apache Cassandra is a distributed open source database that can be referred to as a “NoSQL database” or a “wide column store.” Cassandra was originally developed at Facebook to power its “Inbox” feature and was released as an open source project in 2008. Cassandra is designed to handle “big data”...