kukicola.io - Writing about ruby, rails and other web technologies

AWS NAT Gateway cost is killing you? Enable IPv6 and Egress-only Internet Gateway!

My first Hanami app

Signed URLs with Ruby

Securing Rails applications with Content Security Policy

Improve your specs quality with branch coverage

Dependency Injection in Ruby

Google-like letter avatars using ERB-generated SVGs

Useful Active Support features you may not have heard of

Automatic image moderation using Amazon Rekognition

Handling Ruby 2.7 deprecations warnings