Understanding how things really work

DevelClan publishes deep dives into Ruby, Rails, and the craft of software engineering.

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Software Design

Callbacks, Concerns, and Current: Avoiding Hidden Dependencies in Rails

A tangled tree of branching paths resolving into a neat row of separate, self-contained blocks, with a ruby in the center.

Software Design

From Conditionals to Polymorphism

Many scattered, slightly different streams of code converging step by step into a single crystalline block, with a ruby in the center.

Software Design

Refactoring with Convergence Rules

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Software Design

Factory Method Pattern

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Software Design

Start With Ugly Code

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Software Design

Tests That Survive Change

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Software Design

Composition: Building with Parts

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Software Design

Duck Typing and Inheritance in Ruby

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Software Design

Messages Before Objects

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Software Design

Singleton Pattern

Conceptual scale balancing technical debt and over-engineering in software design.

Software Design

The Cost of Change in Software

'SOLID' text in metal and fire, and 'Dependency Inversion Principle' over a space background.

Software Design

Dependency Inversion Principle

Graphic of the SOLID acronym in a blacksmith setting, with the letter 'I' highlighted in the shape of an anvil and the subtitle 'Interface Segregation Principle'

Software Design

Interface Segregation Principle

Sculptural letters spelling 'SOLID' on a stone base labeled 'LISKOV SUBSTITUTION PRINCIPLE', with the letter 'L' distinctly made of a translucent orange material.

Software Design

Liskov Substitution Principle

A graphic illustration of the SOLID Open-Close Principle, featuring metallic text and a golden gear icon with an open door, set against a blueprint background with code snippets.

Software Design

Open-Closed Principle

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Software Design

Value Objects in Ruby: The Idiomatic Way

Large letters spelling 'SOLID' in a workshop. The 'S' is brass with internal light, and the rest are concrete, resting on a wooden beam that reads 'SINGLE RESPONSIBILITY PRINCIPLE' in white paint.

Software Design

Single Responsibility Principle

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The N+1 Query Problem in Rails: How to Detect and Fix It

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Testing in Ruby: From Scratch to Minitest and RSpec

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Sinatra Tutorial: Building a Ruby To-Do Application

A URL shortener, where a gray arrow with a long URL passes through a large red gear with rubies and emerges as a shorter blue arrow with a short URL

Build Your Own URL Shortener with Rack

Illustration of a shelf containing glowing ruby gems connected by a red cable to a futuristic server and laptops, symbolizing persistent connections in Ruby Rack applications

Streaming, SSE, and WebSockets in Ruby with Rack

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Rack for Ruby: The Complete Beginner’s Guide

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ERB: Embedding Ruby in HTML