Replication Patterns is a community-contributed Claude Code skill in the appsec-tools sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/replication-patterns/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when designing how a database keeps multiple copies of its data in agreement across nodes for availability, read scaling, and disaster recovery: the three foundational topologies (single-leader / primary-replica, multi-leader / multi-primary, leaderless / quorum), synchronous vs asynchronous replication and the replication-lag trade-off, log shipping vs statement replication vs trigger-based replication, the read-after-write consistency problem and its mitigations (sticky session, read-from-leader, monotonic reads), the failover model and split-brain risk, and the relationship to the CAP/PACELC choices the topology realizes. Do NOT use for horizontal partitioning across nodes (use sharding-strategy), the CAP theoretical frame itself (use cap-theorem-tradeoffs), single-node transactional guarantees (use acid-fundamentals), or query tuning (use query-optimization).
The Replication Patterns Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/replication-patterns curl -L https://claudskills.com/skills/replication-patterns/SKILL.md \ -o ~/.claude/skills/replication-patterns/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/replication-patterns/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/replication-patterns/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\replication-patterns\SKILL.md on Windows. See the full install guide for step-by-step instructions.
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