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Articles by Aestimo Kirina

Aestimo is a family guy, Ruby developer, and SaaS enterpreneur. In his free time, he enjoys playing with his kids and spending time outdoors enjoying the sun, running, hiking, or camping.

Account-based subdomains in Rails

Account-based subdomains are a powerful feature that can give your app extra security by isolating user data while giving your users the ability to customize their experience. In this article, you'll learn what account-based subdomains are, why they matter, and how to implement them in a Rails application.

Let's build a Hanami app

Hanami is a fresh take on building full-stack Ruby apps. With its focus on abstractions, minimal defaults, and speed, it could be the framework to take on Rails' dominance of the Ruby landscape. In this tutorial, we build a simple app using Hanami and, along the way, learn the framework and how it works.

How to build your own user authentication system in Rails

When building user authentication for Rails apps, gems like Devise, Doorkeeper, and OmniAuth provide a ready-made solution. However, they may not be flexible enough for all situations. In this article, we look at building a customized Rails user authentication system from scratch.

Building a Sinatra app in Ruby

Sinatra is a Ruby web framework that lets you build apps with less code. It has an expressive syntax and is less complex than other frameworks like Rails. In this article, we’ll use Sinatra to make a URL shortening app and learn how to use this powerful tool.

DIY error monitoring for Ruby

This article will teach you how to monitor Ruby errors without using a service like Honeybadger! Learn about Ruby's built-in errors, how to use log levels and tagging to customize the log output, display errors on the front-end, and more.

Working with PDFs in Ruby

Working with invoices, contracts, or just reading your favorite mystery thriller—whatever the case, PDF files are everywhere. Learn how to work with PDFs in Ruby.

Working With Markdown in Ruby

This article explores how to use markdown in Ruby. Learn how to use two popular Ruby libraries—Redcarpet and Kramdown—to parse markdown and create a simple documentation app using Redcarpet and Sinatra.

An Introduction To Hanami 2.0

Ruby on Rails is one of the most popular Ruby frameworks, but it's not the only one. Hanami 2.0 is faster than Rails and packed with exciting features—it might be the tool you need for your next project!

A Deep Dive into Active Record Validations

Accepting user input is critical to modern Rails applications, but without validations, it can cause problems. In this article, learn how to use ActiveModel validations to ensure the data you process is safe.

Deploying Rails with Docker and AWS Fargate

Want to deploy a Rails app with Docker and AWS, but not sure where to start? AWS Fargate simplifies the convoluted process of deploying Docker on Amazon's Elastic Container Service (ECS). It's also a good alternative to Heroku.
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