Swarm Clusters on Digital Ocean

9 minute read Updated

How to set-up a two-node Swarm cluster on Digital Ocean using Docker Machine.

Lately I’ve been learning more about cloud architecture and related tooling. Stuff like Lambda, Serverless, AWS CLI and – now that it’s a part of Docker Machine – container orchestration with Docker Swarm clusters.

As an AWS user I’m particularly geeked about the Docker Private Beta, which makes it possible to experiment with Swarm using Amazon Web Services. But rather than waiting for a private beta we’re going to experiment with Docker Swarm using one of my favorite prototyping tools apart from the RPi: Digital Ocean.

Simple Websites with Jekyll and Docker

8 minute read Updated

How to host your own simple Jekyll websites on DigitalOcean using Docker.

Looking to create a simple website but don’t want to pay through the nose for hosting? Get started today for free with Jekyll and Docker.

Chat Applications With Redis, Docker and Go

4 minute read Published

Create your own web-based chat app using Redis, Docker and Go.

For several weeks I’ve been thinking about how to go about creating a chat application. After a knowledge drop from Kent Safranski I was inspired to stand-up the chat app using Redis. For the experiment I decided to use Go given the concurrency affordances baked into the language. So I took A Tour of Go and hit the blogs to see what I could find in the open source community.

Reading Redis, Go, & How to Build a Chat Application made me aware of Redigo, a Go client for Redis, and helped demystify use of Redis’ PubSub with Go. The article was a solid introduction and did a great job breaking things down, but ultimately left me wanting a prototype to try things out on the Web. After some more sleuthing on DuckDuckGo I discovered an open source demo app meeting my requirements and providing a great sandbox for experimentation.

In this article I’ll cover how to create a chat application which uses Redis and Go by leveraging open source software and Docker, and use Ngrok to expose the app to the Web over HTTPS.

Automating iOS App Icon Creation

6 minute read Updated

Automate creation of iOS App Icons using SVG multi-rasterization to PNG with Inkscape and shell scripting.

While working on a React Native app for Lumpen Radio I got to the point where I was ready to enter beta - and I needed an App Icon for my app. I hit up a few peeps with apps already in the App Store to understand how they created their app icons. Much to my chagrin I found out each of them had created their app icons manually using an image editing tool of some sort. Not wanting to work through the process of manual image creation using a GUI editor I stumbled upon an Inkscape template and accompanying script that’ll do it for you.