migration_patterns_catalog

This catalog provides detailed descriptions of proven migration patterns, their use cases, implementation guidelines, and best practices. Each pattern includes code examples, diagrams, and lessons learned from real-world implementations.

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# Migration Patterns Catalog

## Overview

This catalog provides detailed descriptions of proven migration patterns, their use cases, implementation guidelines, and best practices. Each pattern includes code examples, diagrams, and lessons learned from real-world implementations.

## Database Migration Patterns

### 1. Expand-Contract Pattern

**Use Case:** Schema evolution with zero downtime
**Complexity:** Medium
**Risk Level:** Low-Medium

#### Description
The Expand-Contract pattern allows f
How to Use

Recommended: Install to project (local)

mkdir -p .claude/skills
curl -o .claude/skills/migration_patterns_catalog.md \
  https://raw.githubusercontent.com/alirezarezvani/claude-skills/main/engineering/migration-architect/references/migration_patterns_catalog.md

Skill is scoped to this project only. Add .claude/skills/ to your .gitignoreif you don't want to commit it.

Alternative: Clone full repo

git clone https://github.com/alirezarezvani/claude-skills

Then reference at engineering/migration-architect/references/migration_patterns_catalog.md

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