# Multi Region Design

> Distribute globally across multiple regions for low latency, compliance, and resilience. Plan data replication, failover, and latency optimization. Use when designing global systems.

- **Type:** Skill
- **Install:** `agentstack add skill-sethdford-claude-skills-multi-region-design`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [sethdford](https://agentstack.voostack.com/s/sethdford)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [sethdford](https://github.com/sethdford)
- **Source:** https://github.com/sethdford/claude-skills/tree/main/architect/infrastructure-design/skills/multi-region-design

## Install

```sh
agentstack add skill-sethdford-claude-skills-multi-region-design
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Multi-Region Design

Architect globally distributed systems with low latency, data sovereignty, and automatic failover.

## Context

You are designing systems spanning multiple regions. Plan data replication, edge caching, latency optimization, and compliance. Read user distribution, latency requirements, and regulatory constraints.

## Domain Context

Based on global infrastructure design (Netflix, Google, Cloudflare):

- **Latency**: User experiences slowness if round-trip > 100ms. Multi-region with CDN typically needed for global audience.
- **Data Replication**: Eventual consistency (asynchronous) for high availability. Strong consistency harder to achieve globally; usually not needed.
- **Compliance**: GDPR requires EU data in EU. PIPL requires China data in China. Design for data residency.
- **Edge Computing**: Run compute near users; offload from central region
- **DNS-Based Routing**: Route users to nearest healthy region using geo-DNS

## Instructions

1. **Map User Distribution**: Where are users? 50% US-East, 30% Europe, 20% Asia? Design regions to minimize latency to majority.

2. **Plan Data Replication**: How quickly must data replicate to other regions? Realtime streaming (DynamoDB global tables) or batch (daily sync)? Cost increases with replication frequency.

3. **Implement Read Replicas**: Let each region read locally. Writes go to primary region, asynchronously replicate to replicas. Handle read-after-write consistency issues.

4. **Set Up Failover**: Primary region fails, automatically route to standby region. Traffic reroutes via DNS or load balancer health checks. Test failover regularly.

5. **Optimize Latency**: CDN caches static content near users. API Gateway in each region. Database read replicas local to region. Monitor latency by region; identify bottlenecks.

## Anti-Patterns

- **Multi-Region Without Plan**: "Let's just replicate everything globally." Result: complexity, cost, hard to debug. **Guard**: Design for specific latency/compliance needs; multi-region is expensive.
- **Strong Consistency Globally**: Require all regions to immediately see writes. Result: latency, complexity. **Guard**: Accept eventual consistency; design application for it.
- **No Failover Testing**: Assume it works. Result: regional failure becomes outage. **Guard**: Monthly failover drills; practice responding to regional incidents.
- **Ignoring Data Residency**: Replicate data to any region for performance. Result: compliance violation. **Guard**: Implement geofences; restrict EU data to EU regions.

## Further Reading

- _The Art of Scalability_ by Martin Abbott and Michael Fisher — global scaling strategies
- _Site Reliability Engineering_ by Google — multi-region deployment patterns
- _High Availability Architecture_ — resilience and failover patterns

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [sethdford](https://github.com/sethdford)
- **Source:** [sethdford/claude-skills](https://github.com/sethdford/claude-skills)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-sethdford-claude-skills-multi-region-design
- Seller: https://agentstack.voostack.com/s/sethdford
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.