data-replication-setup

data-replication-setup is a skill for Claude Code, Codex from aj-geddes/useful-ai-prompts. It costs 34 tokens per session (475 once invoked), scanned A, original, MIT.

A guide to database replication, where copies of a database are kept in sync with a primary database. It covers read replicas, multi-primary setups, monitoring, backups, and failover.

In plain words
What is it for?
Use it to configure PostgreSQL replication, create read replicas, plan failover, monitor replication, and support disaster recovery.
Why use it?
It helps keep applications available when a database server fails and can spread reads across multiple database copies. Replication also supports disaster recovery and copies in other regions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to configure PostgreSQL replication, create read replicas, plan failover, monitor replication, and support disaster recovery.

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Install with agentmods
npx agentmods add skills/aj-geddes/useful-ai-prompts/data-replication-setup
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add aj-geddes/useful-ai-prompts --skill data-replication-setup
Clone the repo
git clone --depth 1 https://github.com/aj-geddes/useful-ai-prompts

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for data-replication-setup

README.md
[![agentmods](https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/data-replication-setup/github.svg)](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/data-replication-setup)
Your own site
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/data-replication-setup"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/data-replication-setup/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for data-replication-setup

Your own site · 80×15
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/data-replication-setup"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/data-replication-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 475 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 18 Mar 2026
  • Snyk fail 4 Mar 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00034 $0.00475
Opus 5 $0.00017 $0.00237
Sonnet 5 $0.00007 $0.00095
Haiku 4.5 $0.00003 $0.00047

Measured 9d ago against content hash 4f0ccbc54f01, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

data-replication-setup scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/validate-schema.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/data-replication-setup/SKILL.md · 78 lines

What it actually says

Data Replication Setup

Table of Contents

Overview

Configure database replication for disaster recovery, load distribution, and high availability. Covers master-slave, multi-master replication, and monitoring strategies.

When to Use

  • High availability setup
  • Disaster recovery planning
  • Read replica configuration
  • Multi-region replication
  • Replication monitoring and maintenance
  • Failover automation
  • Cross-region backup strategies

Quick Start

PostgreSQL - Configure Primary Server:

-- On primary server: postgresql.conf
-- wal_level = replica
-- max_wal_senders = 10
-- wal_keep_size = 1GB

-- Create replication user
CREATE ROLE replication_user WITH REPLICATION ENCRYPTED PASSWORD 'secure_password';

-- Allow replication connections: pg_hba.conf
-- host    replication     replication_user   standby_ip/32    md5

-- Enable WAL archiving for continuous backup
-- archive_mode = on
-- archive_command = 'test ! -f /archive/%f && cp %p /archive/%f'

Reference Guides

Detailed implementations in the references/ directory:

Guide Contents
Master-Slave (Primary-Standby) Setup Master-Slave (Primary-Standby) Setup
Logical Replication Logical Replication
Master-Slave Setup Master-Slave Setup

Best Practices

✅ DO

  • Follow established patterns and conventions
  • Write clean, maintainable code
  • Add appropriate documentation
  • Test thoroughly before deploying

❌ DON'T

  • Skip testing or validation
  • Ignore error handling
  • Hard-code configuration values
Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 78 lines · 34 tokens per session scan A 4f0ccbc54f01

Subscribe to this mod's changes

data-replication-setup is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (338 stars, last pushed 6mo ago), licensed MIT. It adds 34 tokens to every session and 475 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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