🚀 TuskLang Ruby Advanced Deployment Guide

"We don't bow to any king" - Ruby Edition

Deploy with confidence: blue/green, canary, and zero-downtime strategies for TuskLang-powered Ruby apps.

🟦 Blue/Green Deployment

1. Strategy

- Maintain two environments (blue and green). - Deploy new version to green, test, then switch traffic.

2. Example with Docker Compose

services:
  app-blue:
    image: myapp:blue
    ...
  app-green:
    image: myapp:green
    ...
  nginx:
    image: nginx
    ...
    # Switch upstream between blue and green

🟨 Canary Deployment

1. Strategy

- Deploy new version to a small subset of users. - Gradually increase traffic as confidence grows.

2. Example with Kubernetes

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-canary
spec:
  replicas: 1
  selector:
    matchLabels:
      app: myapp
      track: canary
  template:
    metadata:
      labels:
        app: myapp
        track: canary
    spec:
      containers:
      - name: myapp
        image: myapp:canary

🟩 Zero-Downtime Deployment

1. Strategy

- Use rolling updates and health checks. - Ensure old version is only stopped after new is healthy.

2. Example with Capistrano

config/deploy.rb
set :keep_releases, 5
set :linked_files, fetch(:linked_files, []).push('config/app.tsk')
set :linked_dirs, fetch(:linked_dirs, []).push('log', 'tmp/pids', 'tmp/cache', 'tmp/sockets')
namespace :deploy do
  after :publishing, :restart
end

🛡️ Best Practices

- Always validate configs before switching traffic. - Monitor metrics and roll back on errors. - Automate deployment with CI/CD tools.

Ready for production at scale? Let's Tusk! 🚀