Production networking setup for Cadence with reverse proxies, load balancing, and high availability.

Overview

Choose your networking architecture based on your deployment:

Setup	Method	Complexity	Throughput	Cost
Single Server	Direct HTTP	Low	Medium	Low
Production	Nginx + HTTPS	Medium	High	Low
High Availability	HAProxy + Nginx	High	Very High	Medium
Cloud Native	Kubernetes Ingress	High	Very High	High

Core Components

1. Reverse Proxy (Nginx)

Nginx handles:

SSL/TLS termination
Request routing
Rate limiting
Load balancing across backends

Setup: Nginx Reverse Proxy

2. High Availability (HA)

HAProxy provides:

Health checking
Automatic failover
Multi-region support
Session persistence

Setup: High Availability

Quick Setup Guide

Scenario 1: Single Server with HTTPS

┌──────────────┐
│   GitHub     │
│  Webhooks    │
└──────┬───────┘
       │ HTTPS
       ▼
╔══════════════╗
║    Nginx     ║
║  (SSL/TLS)   ║
╚──────┬───────╝
       │ :8000
       ▼
┌──────────────┐
│   Cadence    │
│   Webhook    │
└──────────────┘

Time: 20 minutes Cost: Low

Setup Steps:

Install Nginx
Install SSL certificate
Configure proxy
Enable HTTPS redirect

Scenario 2: High Availability (3+ servers)

┌──────────────┐
│   GitHub     │ 
│  Webhooks    │
└──────┬───────┘
       │ HTTPS
       ▼
╔══════════════════════════════╗
║  Nginx/HAProxy Load Balancer ║
║  (SSL + Health Checks)       ║
╚──────┬───────┬───────┬───────╝
       │       │       │
    :8000   :8001   :8002  
       │       │       │
       ▼       ▼       ▼
      ┌────┬────┬────┐
      │    │    │    │
    Cadence instances (3+)
    Shared Redis Cache
    Shared PostgreSQL (replicated)

Time: 1-2 hours Cost: Medium (3+ servers)

Setup Steps:

Install Cadence on 3+ servers
Setup Redis cluster for shared cache
Setup PostgreSQL replication
Configure HAProxy with health checks
Setup Nginx for SSL/TLS
Configure DNS failover

Common Patterns

Pattern 1: Direct HTTPS (Single Server)

Nginx

server {
    listen 443 ssl;
    server_name cadence.example.com;
    
    ssl_certificate /etc/letsencrypt/certificate.pem;
    ssl_certificate_key /etc/letsencrypt/key.pem;
    
    location / {
        proxy_pass http://localhost:8000;
    }
}

Pattern 2: Load Balanced (Multiple Servers)

Nginx

upstream cadence_backend {
    server 10.0.1.10:8000;
    server 10.0.1.11:8000;
    server 10.0.1.12:8000;
}

server {
    listen 443 ssl;
    
    location / {
        proxy_pass http://cadence_backend;
    }
}

Pattern 3: Geo-Distributed (Multiple Regions)

Primary Region          Secondary Region
┌──────────────────    └──────────────────┐
│ Cadence x3           │ Cadence x3       │
│ Nginx LB             │ Nginx LB         │
└──────────────────→ ⟷←──────────────────┘
                  DNS Failover

Deployment Checklist

HTTPS certificate obtained (Let's Encrypt or custom)
Nginx installed and configured
Webhook secret configured
Rate limiting enabled
Health checks working
Load balancer failover tested
Monitoring alerts configured
Backup/recovery plan documented

Next Steps

Nginx Configuration - Reverse proxy setup
High Availability - Multi-instance failover
Monitoring - Health monitoring

Networking & Load Balancing