By Dmytro Nasyrov, Founder, CTO at Pharos Production Inc. And Pharos Production Inc. - Web3, blockchain, fintech, defi software development services

Tutorial on TOML configuration in Elixir project.

You can find it in our Medium publication

Pharos Production Medium Article.

Also you're warmely welcome to say hello to us Pharos Production - Blockchain and FinTech Software Development

Short step-by-step instruction

0. Initial TOML configuration is in rel->config->config_prod.toml.
You can override config variables from prod.exs using this file.
1. Make a prod release from console:
$> MIX_ENV=prod mix release --env=prod
2. Launch app in a console mode:
$> sh _build/prod/rel/tutorial_toml/bin/tutorial_toml console
3. Read the current value:
iex> TutorialToml.read_demo_value
> Hello, I'm old prod value from TOML
4. Open TOML configuration at _build->config->config_prod.toml
5. Change demo_value to a new value
6. Without stopping the app in the second console run:
$> sh _build/prod/rel/tutorial_toml/bin/tutorial_toml reload_config
7. Check the value again in the first terminal:
iex> TutorialToml.read_demo_value
> Hello, I'm new prod value from TOML