Zero Downtime Database Migration includes pricing or quota commentary; 8 code blocks for direct copy-paste. At roughly 2,609 words the SKILL.md is on the longer end of the catalog distribution.
Zero Downtime Database Migration sits in the Engineering category under the databases sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.
These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.
A schema change on a live production database is three changes happening at once: a deploy, a backfill, and a contract update between code and storage. The job is to never have a moment where the database and the running code disagree on what's required. The shape that always works — and Stripe explicitly names this pattern — is the 4-step dual-writes sequence: dual write → change reads → reverse writes → remove old. ([Stripe Engineering — Online migrations at scale][stripe-online-migrations]) The sibling community framing is expand → migrate → contract. ([Pete Hodgson —…
Zero Downtime Database Migration is a community-contributed Claude Code skill in the databases sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/zero-downtime-database-migration/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when changing schema on a live production database without dropping traffic, doing expand/contract migrations, backfilling new columns on million-plus-row tables, dual-writing across schemas, renaming a hot column, splitting a table, or adding a foreign key to a big table. Triggers: ALTER TABLE locks the world, "must be removed in a separate deploy", expand-contract-cleanup phases, NOT NULL on populated column, foreign-key add on big table, dropping a column still read by old replicas, lock_timeout choice, gh-ost vs pt-online-schema-change.
The Zero Downtime Database Migration Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 94,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/zero-downtime-database-migration curl -L https://claudskills.com/skills/zero-downtime-database-migration/SKILL.md \ -o ~/.claude/skills/zero-downtime-database-migration/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/zero-downtime-database-migration/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/zero-downtime-database-migration/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\zero-downtime-database-migration\SKILL.md on Windows. See the full install guide for step-by-step instructions.
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SKILL.md from the source repository to ~/.claude/skills/zero-downtime-database-migration/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Zero Downtime Database Migration is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{zero-downtime-database-migration-2026,
author = {curiositech},
title = {Zero Downtime Database Migration [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/zero-downtime-database-migration/}
}Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.