Building Multi-Tenant SaaS with Rails 8, Caddy, and Kamal(mooktakim.com)

Building Multi-Tenant SaaS with Rails 8, Caddy, and Kamal

https://mooktakim.com/blog/building-saas-with-rails-and-kamal/

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This is a production guide based on building Dinehere.ai (AI restaurant website builder). The key insight: run Caddy as a Kamal accessory for on-demand TLS. Caddy checks a Rails endpoint before issuing any certificate, so random domains pointed at your IP won't trigger cert issuance. kamal-proxy still handles deployment and health checks — Caddy just sits in front for TLS termination. Part 1 (base Kamal deployment): https://mooktakim.com/blog/deploying-rails-with-kamal/