Upgrading Ubuntu 20.04 to 22.04 LTS using the command line
Upgrading your Ubuntu version can be intimidating — Particularly if you aren't well versed in the Linux CLI (Command Line Interface). We're here to help.
Open Source
We're avid fans of open source, we use it and contribute hundreds of our own projects to the community. Keep up to date with them all.
Displaying posts 1 - 12 of 23 in total
Getting started with Docker on a VPS
Docker has become an integral part of application development. Here's how to get started with Docker on your Virtual Private Server.
Introducing our cookie consent banner, Crumbs!
We built our own lightweight cookie consent banner called Crumbs. See how we're using it on the Katapult website.
Apia: our API framework
We built Apia, a framework for building self-documenting APIs. It's easy to develop and easy for consumers to use.
Postal 2.0
We handle millions of e-mails every month here at Krystal and one of the tools that helps us do that is Postal - our very own open source e-mail delivery platform.
Postal ‑ our open source mail platform
We're delighted to announce that we've just open sourced our e-mail delivery platform, Postal. Postal is a complete and fully featured mail server for use by websites & web servers....
Seamless socket server restarts in Ruby
We utilise a variety of custom socket servers to support our applications. Most of our apps have at least one. We write RPC servers to interact with repository storage in...
Resizing your uploaded images
A couple of days ago I wrote about uploading attachments and in this tutorial I'm going to look at doing some processing on those attachments once they have been uploaded....
Uploading files in your Rails application
Uploading files into your Rails application has never been easier, and with the a wealth of useful gems around to help there's no better time to be working with files.
How to install Staytus from scratch
Staytus is the open source publishing platform that I developed last year when we needed something simple to help us communicate with our customers when issues arise with our service....
Running Ruby apps in production
Over the last few months, I’ve been working on a number of Ruby applications which have a requirement to run a few different types of process — web servers, workers, crons — in order...
Memoization in Ruby
Memoization is a technique employed in many languages which allows you to cache the results of slow or expensive operations and return the cached result whenever the method is subsequently...