claude

migration-patterns-plugin

Safe database and system migration patterns - dual write, shadow mode, strangler fig

60 on GitHubby Lauri Gatesv1.7.0MITupdated todayinfrastructure
/

Plugin migration-patterns-plugin from marketplace laurigates-claude-plugins in laurigates/claude-plugins. Commands read from the repo's manifest — today.

What it installs

Skills (7)

  • black-to-ruff-format

    Migrate Python formatting from black to ruff-format. Use when psf/black is in .pre-commit-config.yaml or [tool.black] exists in pyproject.toml.

  • dual-write

    Dual-write pattern for safe data store transitions. Use when planning DB migrations, switching storage backends, or reviewing code writing to multiple systems simultaneously.

  • eslint-to-biome

    Migrate JS/TS linting from ESLint+Prettier to Biome. Use when .eslintrc* or eslint.config.* exists and no biome.json is present.

  • flake8-to-ruff

    Migrate Python linting from flake8/isort to ruff. Use when pycqa/flake8 or PyCQA/isort is in .pre-commit-config.yaml or [tool.flake8]/[tool.isort] config exists.

  • mypy-to-ty

    Migrate Python type checking from mypy to ty (Astral). Use when mirrors-mypy is in .pre-commit-config.yaml or [tool.mypy] config exists.

  • shadow-mode

    Shadow mode / dark-launch for validating new systems under production load. Use when testing replacement services, comparing behavior, or planning traffic mirroring for migrations.

  • tool-migration-cutover

    Migrating tools (Dependabot to Renovate, PAT to GitHub App, linter swaps). Use when removing the incumbent, to verify the new one runs, or on whole-file reformat churn from a leftover tool.

View source on GitHub

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