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Ruby

89 posts tagged ruby — the same founder-tested patterns, filtered.

TDD Without the Overkill: Why Lightweight TDD Ships Faster

May 4, 2026 · 8 min read

tdd, ruby, productivity, engineering, startup

TDD looks slow on paper. The real ledger is one hour writing tests against six hours debugging next week. Here is why lightweight TDD wins.

TDD in Ruby: A Step-by-Step Guide

May 4, 2026 · 10 min read

ruby, bestpractices, tutorial, learning, tdd, testing

A working Ruby tutorial for TDD on a small Order class. The 90-second loop, Shameless Green, Tidy First commits, and the reset move that makes it all safe.

Refactor Without Breaking Tests: The 3-Line Discipline in Ruby

May 4, 2026 · 14 min read

tdd, ruby, refactoring, engineering, tech-debt

The refactor step breaks more tests than green ever does. Cap each refactor commit at three lines of Ruby and the suite stays green every time.

Rails CVE-2026-41316: Detection and Patch

May 2, 2026 · 3 min read

rails, ruby, security, cve

CVSS 8.1 universal RCE chain through ERB::DeprecatedInstanceVariableProxy and Marshal.load. Detection, upgrade path, Rails 7.0/7.1 EOL options.

Rails 8.1: Subscribe to Events, Skip Logs

Apr 26, 2026 · 11 min read

rails, ruby, rails-8, observability, logging

Rails 8.1 replaces log parsing with structured events. Wire ActiveSupport::Notifications to Datadog, New Relic, or Prometheus - no regex required.

Active Job Continuations in Rails 8.1

Apr 14, 2026 · 8 min read

rails, ruby, rails-8-1, active-job, background-jobs, kamal, solid-queue, sidekiq

Rails 8.1's ActiveJob::Continuable resumes long jobs from their last completed step. How to wire it in, when not to, why Kamal deploys stop losing work.

Solid Trifecta: When to Keep Redis in Rails 8

Apr 13, 2026 · 9 min read

rails, ruby, rails-8, performance, caching, solid-queue, deployment

Rails 8 defaults to Solid Cache, Solid Queue, and Solid Cable. Most apps don't need Redis anymore. Some still do. Here's how we decide which workloads stay.

Ruby on Rails Performance Optimization Patterns for 2026

Apr 9, 2026 · 7 min read

ruby, rails, performance, optimization, yjit, rails-8, caching

Concrete benchmarks and patterns for Rails performance in 2026 - YJIT speedups, Rails 8 query optimization, Redis caching, and N+1 elimination.

Rails `has_secure_password` with Argon2: Complete Migration Guide

Apr 9, 2026 · 6 min read

rails, ruby, security, authentication, argon2, has_secure_password

Step-by-step guide to enabling Argon2 with has_secure_password in Rails. Migrate from BCrypt with zero downtime using the Hybrid Verifier pattern in production.

Ruby LangChain Testing Guide 2025 | RSpec + WebMock

Oct 17, 2025 · 29 min read

ruby, langchain, rspec, testing, ai, mocking, vcr, webmock, ci-cd

Master RSpec testing for LangChain-Ruby with 25 working examples. Learn mocking, VCR, WebMock, and CI/CD automation. Build reliable AI features with 95%+ test coverage.

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