ClaudSkills / Engineering / data-engineering

Replication Overview

Q: What is a Claude Code skill and how does the Replication Overview skill fit in?

A Claude Code skill is a 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. Replication Overview is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: data-engineering · Last updated: 2026-07-10

type:review

Hack or review PostgreSQL replication internals — covers physical streaming, archive shipping, logical decoding, logical replication PUB/SUB, and synchronous-commit machinery. Names walsender / walreceiver / replication slot / output plugin callbacks plus the relevant GUCs (wal_level, max_wal_senders, max_replication_slots, max_logical_replication_workers, primary_conninfo, primary_slot_name, synchronous_standby_names) and the source files behind each flavor. Use whenever a PG patch touches walsender, walreceiver, replication slots, logical decoding, output plugins, publications/subscriptions, conflict detection, sync replication, failover slots, pg_basebackup, or pg_receivewal — or when picking which mechanism fits a feature design. Skip for MySQL row-based / GTID replication, MongoDB replica sets, Cassandra hinted handoff, Kafka MirrorMaker / Confluent Replicator, Debezium / Flink CDC pipelines, AWS DMS, and Galera / Group Replication.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

For the conceptual model (slot lifetimes, decoding pipeline, conflict semantics) read knowledge/architecture/replication.md.

What this skill does

Replication Overview is a community-contributed Claude Code skill in the data-engineering sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/replication-overview/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use whenever a PG patch touches walsender, walreceiver, replication slots, logical decoding, output plugins, publications/subscriptions, conflict detection, sync replication, failover slots, pg_basebackup, or pg_receivewal — or when picking which mechanism fits a feature design. Skip for MySQL row-based / GTID replication, MongoDB replica sets, Cassandra hinted handoff, Kafka MirrorMaker / Confluent Replicator, Debezium / Flink CDC pipelines, AWS DMS, and Galera / Group Replication.

Who uses this skill

The Replication Overview 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 153,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/replication-overview
curl -L https://claudskills.com/skills/replication-overview/SKILL.md \
  -o ~/.claude/skills/replication-overview/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/replication-overview/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/replication-overview/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\replication-overview\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Replication Overview Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/replication-overview/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Replication Overview skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Replication Overview skill?

Use Replication Overview when your Claude Code task falls under the Engineering category — specifically in the data engineering area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Replication Overview" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Replication Overview skill fit in?

A Claude Code skill is a 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. Replication Overview 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/.

Attribution & license

Source: https://github.com/matejformanek/postgres-claude/blob/HEAD/.claude/skills/replication-overview/SKILL.md
License: PostgreSQL
Author: matejformanek
Website: https://github.com/matejformanek/postgres-claude

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

matejformanek. (2026). Replication Overview [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/replication-overview/

BibTeX

@misc{replication-overview-2026,
  author    = {matejformanek},
  title     = {Replication Overview [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/replication-overview/}
}

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Badge

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Security scan

Grade A · scanned 2026-07-18 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/replication-overview/#security)

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