Production

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Introduction

You build and run a Phoenix app with Corex in production locally. Corex ships as plain HEEx plus ESM JavaScript; mix assets.deploy minifies and digests the same CSS and per-hook chunks you use in development.

Before you start

RequirementNotes
SECRET_KEY_BASEmix phx.gen.secret
Database URLProduction or local stand-in
ESM Esbuild--format=esm --splitting from Manual installation

How it works

  1. MIX_ENV=prod mix compile builds the release artifacts.
  2. mix assets.deploy runs Tailwind and Esbuild with --minify, then digests files under priv/static.
  3. With splitting enabled, you get an entry chunk plus one chunk per lazy hook under priv/static/assets/js/.

Steps

Generate a secret:

mix phx.gen.secret

Set environment variables (example .env, add to .gitignore):

export SECRET_KEY_BASE="__YOUR_SECRET__"
export DATABASE_URL="ecto://postgres:postgres@localhost/my_app_dev"

source .env
MIX_ENV=prod mix compile
MIX_ENV=prod mix assets.deploy
MIX_ENV=prod mix phx.server

Visit http://localhost:4000/.