Best of Ruby — February 2026

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    Video
    Avatar of bytemonkByteMonk·14w

    How Stripe Built AI Agents That Write 1,000+ Pull Requests a Week

    Stripe's internal AI coding agents, called 'minions', autonomously merge over 1,000 pull requests weekly through a six-layer system architecture. The system combines an open-source agent fork with Stripe-specific infrastructure: Slack-initiated workflows, pre-fetched context via MCP (400+ tools), isolated dev boxes, hybrid deterministic-LLM execution, tiered validation (linters, selective CI tests, capped retries), and standard PR workflows. The key insight is that existing developer productivity tools work equally well for AI agents, with the real engineering challenge being the harness around the agent rather than the agent itself.

  2. 2
    Article
    Avatar of rubylaRUBYLAND·13w

    Ruby 4 & Rails 8: A Multi-Front Acceleration of the Ruby Ecosystem

    Ruby and Rails are undergoing a coordinated multi-front evolution. Ruby 4 brings incremental VM improvements, maturing Ractors for real CPU-bound parallelism, pluggable garbage collectors for workload-specific memory management, and a leaner modular standard library. On the Rails side, Rails 8.1 introduces Solid Queue for database-backed background jobs (reducing Redis dependency), a built-in authentication generator, improved parallel gem resource management, and deeper PostgreSQL 18 integration. The author also highlights two new libraries—ruby-libgd and libgd-gis—that bring native graphics and GIS capabilities to Ruby. The piece concludes with a call for Western and LATAM developer communities to re-engage with Ruby's accelerating evolution.

  3. 3
    Article
    Avatar of rubyflowRuby Flow·15w

    Rails Meets PostgreSQL 18

    PostgreSQL 18 introduces protocol 3.2 with extended cancel keys, removes UNLOGGED partitioned tables, and adds virtual generated columns. Rails 8.1 adapts through defensive adapter patches, requires pg gem ≥1.6 for compatibility, and adds support for virtual generated columns with `stored: false`. The pg_stat_statements extension receives improvements for better query profiling. Rails maintains forward compatibility through runtime capability detection rather than version ceilings, demonstrating mature ecosystem collaboration between PostgreSQL core, the pg gem, and Rails adapters.

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