blog/backend/src/config.rs

use envconfig::Envconfig;
use lazy_static::lazy_static;

#[derive(Envconfig, Debug)]
pub struct Config {
    #[envconfig(from = "BACKEND_DB_URL")]
    pub db_url: String,
}

lazy_static! {
    pub static ref CONFIG: Config = Config::init_from_env().unwrap();
}