Babysitter load-balancer

Expert skill for load balancer configuration, algorithms, and high availability design

install

source · Clone the upstream repo

git clone https://github.com/a5c-ai/babysitter

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/a5c-ai/babysitter "$T" && mkdir -p ~/.claude/skills && cp -r "$T/library/specializations/network-programming/skills/load-balancer" ~/.claude/skills/a5c-ai-babysitter-load-balancer && rm -rf "$T"

manifest: library/specializations/network-programming/skills/load-balancer/SKILL.md

Load Balancer Skill

Expert skill for load balancer configuration, algorithm implementation, and high availability design.

Capabilities

HAProxy Configuration: Configure HAProxy for L4/L7 load balancing with advanced features
NGINX Load Balancing: Set up NGINX as a reverse proxy and load balancer
Algorithm Implementation: Implement round-robin, weighted, least-connections, IP-hash, and consistent hashing
Health Checking: Design comprehensive health check strategies (TCP, HTTP, custom)
Session Persistence: Configure sticky sessions, cookie-based affinity, and source IP persistence
Load Distribution Analysis: Analyze and optimize traffic distribution across backends
High Availability: Configure HA pairs with failover using keepalived/VRRP
SSL/TLS Termination: Configure TLS termination and re-encryption

Tools and Dependencies

```
HAProxy
```
- High-performance TCP/HTTP load balancer
```
NGINX
```
- Web server and reverse proxy
```
keepalived
```
- HA and failover
```
LVS/IPVS
```
- Linux Virtual Server
```
haproxyctl
```
- HAProxy management

Target Processes

layer4-load-balancer.js
layer7-load-balancer.js
health-check-system.js

Usage Examples

HAProxy Backend Configuration

backend web_servers
    balance roundrobin
    option httpchk GET /health
    http-check expect status 200
    server web1 10.0.0.1:80 check weight 100
    server web2 10.0.0.2:80 check weight 100 backup

NGINX Upstream Configuration

upstream backend {
    least_conn;
    server 10.0.0.1:8080 weight=5;
    server 10.0.0.2:8080;
    keepalive 32;
}

Health Check Verification

echo "show stat" | socat stdio /var/run/haproxy/admin.sock

Quality Gates

Backend health verification
Load distribution validation
Failover testing
Performance benchmarking
Session persistence verification