- Each web application should use a '.env' file for configuring the environment. The goal is to keep the source code clean and avoid the need to modify it when deploying. Both CodeIgniter 4 and Laravel have built-in support for '.env' files. CodeIgniter 3 can use the package https://github.com/vlucas/phpdotenv . For NodeJS, you can use the package https://www.npmjs.com/package/dotenv .
- Recommended MySQL/MariaDB character set is utf8mb4 and collation is utf8mb4_unicode_ci