Neo4j is a Graph Database. It uses Graph Data Model to represent the data, unlike other databases which use tables, documents, etc. Graph Data Model or Graph Data Structure is composed of Nodes and Relationships that connect nodes. Neo4j Browser A query workbench and a visualization interface. To install Neo4j and run Neo4j Browser - you can head to https://neo4j.com/download/ and download a community or an enterprise edition based on your requirements. Based on your OS the installation steps may vary - and once you have a Neo4j application installed - you can now choose the location

While working with any application, testing plays most important role. Data is main requirement for writing proper test cases. We need different kind of data to test complex features and here factories plays important role. Data factory is blueprint that allows us to create an object, or a collection of objects, with predefined set of values. Factories makes it easy for us to define different kind of data. In rails or ember we create model object to write test cases. In rails many of us use FactoryGirl to create such test data using factories. Same way ember has FactoryGuy. Ember's

Algolia provides in a nutshell, Search As A Service, which if you think is a pretty cool service. It takes away all the heavy lifting of building & maintaining a search infrastructure, gives you a nice API to work with and a robust monitoring to keep everything in check. The team at Algolia has open sourced API client for most of the programming languages & also built libraries for a bunch of popular platforms out there. React-InstantSearch is one of such library which we will be using in this example. Here is the demo of what we’re going to

In one of our Rails 4 app, we decided to move file and image uploads to another microservice so that the load on server is reduced when a big file is uploaded. We decided to do this in Phoenix. In Phoenix, we have ex_aws package which makes file uploads to S3 very simple just like Rails. So lets get started. Add ex_aws Update mix.exs to include following dependencies. defp deps do [ ..., {:ex_aws, "~> 1.0"}, {:poison, "~> 2.0"}, {:hackney, "~> 1.6"}, {:sweet_xml, "~> 0.6"

Component is one of the awesome thing in knockoutjs. It makes code more manageable, reusable and help you to code cleanly. Separating functionality in components make coding easier. You can create your own controls and use it anywhere in your project. You can have nesting of components. You can break your sections into small reusable controls or you can have entire section of application in one component. For nesting of components there is option to pass data to child components through parameters. Same way for child to parent communication there is callback functionality. As components can get asynchronously loaded or

In the previous article, we have seen how to configure DigitalOcean Droplet. Now let's proceed further to set up our application repository and Ngnix with Phusion Passenger on the DigitalOcean droplet. 1. Install RVM and Ruby We will install ruby using Ruby Version Manager(RVM) as it gives more flexibility to manage multiple ruby versions on the same system over rbenv, chruby, etc. Import RVM GPG key, before installing RVM: gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 Then, install RVM: curl -sSL https://get.rvm.io | bash -s stable Load RVM script and run requirement command to manage the

Nginx is a lightweight, high-performance web server. Passenger used with Nginx gives us many advantages. It automatically serves static assets from the public subdirectory to improve performance. Capistrano is used to automate deployment process to your remote server. Using Capistrano, you can deploy your web application on many servers simultaneously in sequence or as a rolling set. In this article, we will see basic steps that need to be followed to configure your DigitalOcean Ubuntu Droplet. Prerequisites: Ubuntu 16.04 x64 Droplet Working Rails app hosted in a remote git repository that's ready to be deployed Initial setup for the

In this article I'm gonna show you how to build MySQL Docker container image. This article assumes that you've some basic knowledge about Docker. To run MySQL on Docker we would need to do the following Install Docker engine on your computer Download MySQL image from Docker Hub And run the container First, get the MySQL image docker pull mysql You'll need to set up your credentials and specify path for MySQL docker run -d --name=mysql1 -e MYSQL_ROOT_PASSWORD=’mypassword’ -v /storage/mysql1/mysql-datadir:/var/lib/mysql mysql docker run -d --name=mysql2 -e MYSQL_ROOT_PASSWORD=’mypassword’

Apple URL Schemes helps you to access system apps in iOS. Native iOS app uses this schemes to integrate with system apps and provide a more seamless experience to the user. For example :- If your app display telephone number you can use appropriate URL to launch phone app whenever user click on the telephone number. There are many functions of Apple URL Schemes used for such as :- 1. Phone Link :- Phone link helps you to make dialing experience easy for specific phone numbers. It will prompt an alert to the user to make a call or cancel

Ever stuck on a remote server with some file? Needed to upload/download file from remote server? Find FTP clients tedious for a simple file upload/download? Keep reading for one stop solution to all these problems. Many a times I fall in situation where I have to deal with remote servers and just to upload a file I have to open FTP clients and have to leave command line for such a simple task. I always wondered if, there was a command line way of doing simple FTP stuffs. Then few weeks ago I came across transfer.sh. As