Ruby at the Front Line of Disaster Prevention

#programming #ruby #software #environment

Ruby at the Front Line of Disaster Prevention

December 26, 2025

How Tokyo Gas Uses Ruby to Protect Millions of People During Earthquakes

Based on the RubyWorld Conference 2025 presentation by Maika Yamaguchi, Tokyo Gas i-Net Corp.

When we think about Ruby in production, we usually imagine web platforms, SaaS products, or developer tools. But in Tokyo, Ruby is doing something far more critical: it is protecting millions of people from fires and explosions after major earthquakes.

At RubyWorld Conference 2025, Maika Yamaguchi from Tokyo Gas i-Net Corporation presented one of the most impressive real-world Ruby deployments ever shown: the earthquake disaster prevention system of the Tokyo Gas Group , a nationwide, mission-critical infrastructure that must work perfectly under the worst possible conditions.

This is the story of how Ruby became the backbone of a national safety system.