monolith-to-services-extraction

What problem does it solve?

This Skill eliminates the risk of production-breaking, failed full monolith rewrites by providing a proven, incremental extraction workflow that keeps your Rails application stable and functional at every step of the process.

Core Features & Use Cases

• Strangler Fig Pattern Implementation: Guides you through the 7-stage incremental extraction workflow to avoid the common pitfalls of big-bang service rewrites.
• Schema-First Decoupling: Prioritizes separating database schemas before extracting code to eliminate tangled foreign key dependencies early in the process.
• Safe Cutover Process: Includes dark-launching, dual-write reconciliation, and phased feature flag ramps to validate the new service before it becomes the source of truth.
• Explicit Rollback Paths: Defines clear, reversible steps for every stage so you can revert changes immediately if issues arise in production.
• Use Case Example: If your team needs to extract the billing subsystem from your Rails monolith, this Skill walks you through identifying the service seam, decoupling the billing database schema, dark-launching the new billing service to compare results, and cutting over only after confirming zero data drift.

Quick Start

Use the monolith-to-services-extraction skill to plan the incremental extraction of the inventory reservation functionality from your Rails monolith using the strangler fig pattern.