Introduction This post will show you how to generate SSH private and public keys step by step, as well as how to add public keys to your GitHub and Bitbucket accounts. But first, why do we require this SSH public key If you want to do any work on a secure GIT repository, such as cloning or pushing your latest changes, you will need to provide your credentials to help GIT authenticate you and approve those operations, whether you are working in a team or as an individual....

Introduction Symfony EventDispatcher is object which interacts with different set of objects when certain event happens. To illustrate Event Dispatcher definition let’s consider the online shopping website example. suppose you want to purchase a mobile from online shopping website , but unfortunately that mobile is out of stock. Then you subscribe into online shopping website for this mobile availability. When mobile comes in stock, online shopping website notifies you about mobile phone’s availability via email....

Introduction Custom Module development in Drupal 8 is very simple. It may looks very difficult for developer who has Drupal 7 experience or nothing at all. This tutorial will show easy steps and helps you to create custom module within few minutes. Note: Content or example of this tutorial may change according to Drupal 8 version and its release. This tutorial is divided into three small sections. In first section of this tutorial we will see what directory structure we need to create for a custom module....

Introduction Following is simple JAX-RS tutorial, which sends “Hello World” text as response string using JAX-RS API and Jersey implementation. Technologies and Tools used in this article: JDK Eclipse Tomcat Maven Jersey 1.8 Create Maven Web Project Create a Maven web project and name it “helloworld” . File -> New -> Other -> Maven Project -> Next Select maven-archetype-webapp Select Next Type Group Id, Artifact Id and Package name And select Finish Add Project Dependencies Add Jersey repository using Maven....

Introduction Sass (Syntactically Awesome Stylesheets) is scripting language which produces Cascading Style Sheets (CSS). Sass is compatible with all CSS version and has assorted features. It is open source and developed in Ruby. What does Sass do In simple terms by using Sass and its features we can create robust and large Style sheet with less effort and in less time. How to Install Sass Sass requires Ruby, so if you are using Windows System then you need to install Ruby first....

Introdcution JAX-RS is API specification for RESTful web services using Java. RESTful web services is implementation of REST (Representational State Transfer) which is architectural design for distributed system or in general we can say JAX-RS is a set of APIs to develop REST service. This is a brief introduction about REST and JAX-RS. You can find more information on REST on Wiki and JAX-RS Official Site. What is REST Representational state transfer is an abstraction of the architecture of the World Wide Web....

Introduction This article will show you how to use Java to perform CRUD operations on MongoDB records. If you’re new to MongoDB, we recommend starting with the Getting Started With MongoDB tutorial. To begin, we’ll establish a Person and Person Images table (a collection in MongoDB) to make CRUD operations in MongoDB easier. Define Data Structure The following is the data structure of the Person and Person Images table (collection in MongoDB)....

Introduction Elasticsearch is open source search system based of Apache Lucene. this is a brief introduction, you can find more information on Elasticsearch Official Site or Wiki. What are features of Elasticsearch Here are list of features of Elasticsearch. Real Time Search and Analytic. Distributed Data (Scales Horizontally) Based on Apache Lucene High Availability Full Text Search JSON Based Documents RESTful API Multi Facets Geo Location Search Open Source How to install ElasticSearch Download the latest version from Elastic....

Introduction MongoDB is a No-SQL open source database system that stores information in documents. MongoDB was created with excellent performance and accessibility in mind. A document is a collection of fields and value pair combinations that are stored in BSON (binary representation of JSON records), which is the native data type in most languages. MongoDB uses collections to hold groups of documents. Now let’s see the basic operations that can be handled in MongoDB....