Pelumi is a Vice President of Software Engineering at Bank Of America in Dublin, Ireland. Pelumi discovered Elixir in 2021 and has been an ardent convert since then. He frequently evangelizes Elixir internally in his organisation and encourages the adoption of BEAM and OTP principles for developing fault-tolerant applications. His contributions to the Elixir ecosystem include Whisperer: A Framework for Agentic AI workflows in Elixir.
Self-hosted Elixir applications offer control, cost efficiency, and privacy. This session outlines a modern workflow for deploying Elixir apps sustainably and securely, using Raspberry Pi as a server paired with Cloudflare and Coolify.
Elixir Leverages BEAM’s concurrency, fault tolerance, and real-time capabilities, amplified by Phoenix’s tooling. By combining this with Cloudflare’s protections and using Coolify to manage a Raspberry Pi server, turning it into a PaaS, we can create a product with minimum recurrent running costs yet the ability to concurrently service close to a million requests.
Talk objectives:
**Reasons to consider Raspberry Pi **
Low-cost, energy-efficient hardware for edge deployments.
Perfect for small-to-medium apps (e.g., IoT, personal projects, microservices).
Full control over data with no cloud vendor lock-in.
** Cloudflare’s Role **
Tunnels: Securely expose apps on Raspberry Pi without port-forwarding or static IPs.
DNS & CDN: Mask Pi’s residential IP and optimize global traffic.
Zero Trust: Protect admin interfaces (e.g., Coolify dashboard).
** Coolify on Raspberry Pi **
Deploy Coolify (open-source PaaS) on Pi via Docker—supports ARM64.
Automate Elixir app deployments using Git: Build mix release or Docker images directly on the Pi.
Manage databases (Postgres/Redis), cron jobs, and SSL (via Cloudflare).
Target audience:
BEAM Enthusiasts, Hobbyists, Engineers, CTOs