How does this skill prevent production outages during migrations?

It enforces a 'small, reversible steps' philosophy, using dual-writing patterns and feature flags to ensure new code is proven before the old path is removed.

What is the Adapter Pattern mentioned in the skill?

The Adapter Pattern is a strategy to wrap third-party library usage in a generic interface, making it easy to swap one library for another by changing only the adapter code.

Does it support framework upgrades?

Absolutely. It provides a structured approach involving minor version upgrades first and fixing deprecation warnings before attempting major version jumps.

How are API deprecations handled?

The skill guides you through adding warning headers, documenting migration paths, and monitoring usage metrics to ensure a sunset date is safe to execute.

Can I use this for database schema changes?

Yes, it includes specific patterns for adding, removing, and renaming columns without downtime, such as adding nullable columns before applying constraints.

Safe Code Migrations

Name: Safe Code Migrations
Author: rileyhilliard

byrileyhilliard

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Database Management

Facilitates secure, backward-compatible software transitions including database schema changes, API versioning, and framework upgrades.

About

The Safe Code Migrations skill provides a rigorous framework for executing complex technical transitions without interrupting production services. It equips Claude with domain-specific patterns for database schema evolution, API deprecation workflows, and framework upgrades, emphasizing a 'safety-first' approach. By utilizing small, reversible steps, dual-writing strategies, and feature flags, this skill ensures that developers can modernize their stacks, swap libraries via the adapter pattern, and evolve data structures with clear rollback plans and minimal risk.

Key Features

62 GitHub stars
Safe database evolution patterns including dual-write and non-blocking schema changes.
API deprecation workflows with sunset monitoring and structured warning responses.
Feature flag integration for gradual rollouts and instant rollbacks.
Step-by-step framework upgrade guides to handle major version transitions safely.
Implementation of adapter patterns to decouple and swap third-party libraries.

Use Cases

Restructuring high-traffic database tables without downtime or data loss.
Transitioning a legacy REST API to a new version using gradual deprecation notices.
Upgrading core project dependencies and frameworks one major version at a time.

About

Key Features

62 GitHub stars
Safe database evolution patterns including dual-write and non-blocking schema changes.
API deprecation workflows with sunset monitoring and structured warning responses.
Feature flag integration for gradual rollouts and instant rollbacks.
Step-by-step framework upgrade guides to handle major version transitions safely.
Implementation of adapter patterns to decouple and swap third-party libraries.

Use Cases

Restructuring high-traffic database tables without downtime or data loss.
Transitioning a legacy REST API to a new version using gradual deprecation notices.
Upgrading core project dependencies and frameworks one major version at a time.