Author: Nic Raboy

Load A JSON Configuration From File In A Golang Application

April 3, 2017

Have you ever built an application and decided that you didn’t want to hardcode a bunch of values that might change frequently? The answer is, probably yes. When building a web application, it is common to separate configuration details into a separate file which might contain database information, hostnames, passwords, and anything else that probably shouldn’t exist in the application as hard-coded values.

We’re going to see how to open a JSON configuration file using the Go programming language and load it into a custom data structure to be used throughout the application.

April 1, 2017

Nic Raboy

I’ve been on and off when it comes to Docker, but lately I’ve been starting to embrace it. In comparison to virtual machines, containers a lot easier to maintain and are more lightweight. While working with containers are great, their true power aren’t made visible until you start clustering them. There are a few clustering and orchestration options, the most popular being Kubernetes and Docker Swarm.

In this guide we’re going to see how to create a simple Docker Swarm cluster on several server nodes that consist of both manager nodes and worker nodes.

March 31, 2017

Nic Raboy

Over the past few weeks I’ve been doing a lot of investigation into JSON Web Tokens (JWT) for authentication in APIs. If you’ve been keeping up, you’ll remember I wrote about JWT authentication in a Node.js application as well as building a client facing NativeScript and Angular mobile application that made use of the Node.js backend. This is great, but what if you’re not very fond of JavaScript development?

We’re going to see how to create a backend API that creates and validates JSON Web Tokens using the Go programming language. This teach us how to create an API that offers an authentication mechanism outside of sessions and cookies, which typically are not available when working with an API.

March 28, 2017

Nic Raboy

I am pleased to announce that the latest episode of The Polyglot Developer Podcast has been published to all the popular podcasting networks which include, but are not limited to, iTunes and Pocket Casts. In this episode titled, The Go Programming Language and Where it Fits in Modern Development, I am joined by Go advocate, Matt Holt, where we discuss Go as an option to modern development.

In this episode we discuss where Go excels and how it compares to other popular development technologies such as PHP and Node.js.

March 27, 2017

Nic Raboy

Ever found yourself working with comma separated value (CSV) data from a file or other source? This format is easy to generate if you’re working with spreadsheet applications like Google Sheets or Microsoft Excel, and RDBMS applications. So how do we load this data and work with it in an application? More specifically an application built with the Go programming language?

We’re going to see how to take a CSV file and load it into a custom data structure to eventually be printed as JSON within the application.

March 24, 2017

Nic Raboy

When building a web application, not only do you need amazing features, but you also need a stunning user experience and that can often be managed by making good use of UI components. When I’m using my favorite web applications, the way components are displayed on the screen are sometimes what makes the application so memorable. Designers will often animate components to make them stand out.

When building a web application you can use CSS keyframe animations, but if you’re using Angular, there is another way. We’re going to see how to use the Angular Animations component to animate UI components on the screen.

March 20, 2017

Nic Raboy

Any mobile application that accesses remote data will need authentication at some point in time. There are many different authentication strategies out there, one of which is with Json Web Tokens (JWT) that we explored in one of my previous Node.js articles. With JWT, users can authenticate via username and password, receive a signed token back, and use that token for any future API request rather than continuing to distribute the username and password.

In this tutorial we’re going to explore how to build an Android and iOS mobile application using NativeScript and Angular that authenticates with an API and then uses a Json Web Token for future requests to that same API.

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