| ADMIN_EMAIL | string | The admin email address. |
| APP_HOST | string | Current application's host. |
| APP_TITLE | string | Current application's name. |
| APP_URL | string | Current application's URL. |
| ASSET_HOST | string | Host where assets are stored. |
| AUTH | boolean | Specify if ActiveAdmin requires authentication (before logging in). |
| AUTH_PSWD | string | Authentication password. |
| AUTH_USER | string | Authentication user name. |
| AWS_ACCESS_KEY_ID | string | Amazon AWS access key id. |
| AWS_SECRET_ACCESS_KEY | string | Amazon AWS secret access key id. |
| BACKEND_APP_HOST | string | Backend application host. |
| BETA_PSWD | string | |
| BETA_USER | string | |
| BRAINTREE_ENVIRONMENT | string | Specify Braintree environment (sandbox, production). |
| BRAINTREE_MERCHANT_ID | string | Specify Braintree merchant id. |
| BRAINTREE_PRIVATE_KEY | string | Specify Braintree private key. |
| BRAINTREE_PUBLIC_KEY | string | Specify Braintree public key. |
| BUGSNAG_API_KEY | string | Specify Bugsnag key. |
| BUNDLE_WITHOUT | string | |
| COUNT | integer | |
| COVERBAND_DISABLE_AUTO_START | boolean | |
| DATABASE_URL | string | URL to follow to reach DB. |
| DB_NAME | string | Name of the database |
| DB_USER | string | Database username |
| DB_PASS | string | Database password |
| DISABLE_PUMA_WORKER_KILLER_LOGS | boolean | |
| DISABLE_RACK_TIMEOUT_LOGGER | boolean | |
| ERRBIT_API_KEY | string | |
| ERRBIT_HOST | string | |
| ERROR_PAGE_URL | string | URL for error page. |
| FACEBOOK_APP_ID | string | Facebook application's ID. |
| FACEBOOK_APP_SECRET | string | Facebook application's secret key. |
| FATTUREINCLOUD_API_KEY | string | FattureInCloud key. |
| FATTUREINCLOUD_API_UID | string | FattureInCloud uid. |
| FRONTEND_APP_HOST | string | Host where fronted is running. |
| GOOGLE_API_KEY | string | |
| HEROKU_POSTGRESQL_CYAN_URL | string | Herokuì's DB URL. |
| HOLIDAYS_CLOSINGS | boolean | Use holidays closing as defined in the code. |
| INSTAGRAM_CLIENT_ID | string | Instagram application's ID. |
| INSTAGRAM_CLIENT_SECRET | string | Instagram application's secret key. |
| MAX_REQUEST_MAX | integer | |
| MAX_REQUEST_MIN | integer | |
| ONLINE_DISCOUNT | integer | Online discount amount in euros (deprecated after new promotions). |
| OOM_MAX | integer | |
| OOM_MIN | integer | |
| OPENSEARCH_URL | string | URL to OpenSearch server. |
| PREPARED_STATEMENTS_ENABLED | boolean | |
| RACK_ENV | string | |
| RACK_TIMEOUT_SERVICE_TIMEOUT | integer | |
| RAILS_ENV | string | Rails environment (production, develop, beta, test). |
| REDISCLOUD_URL | string | |
| RELEVANCE_PENALTY | boolean | |
| REQUESTED_APPOINTMENT_EXPIRATION | integer | |
| S3_BUCKET_NAME | string | Amazon AWS S3 bucket name. |
| SECRET_KEY_BASE | string | |
| SEEDS_CSV_PATH | string | Path to CSV files for seeds. |
| SEGMENT_IO_API_KEY | string | |
| SEND_SMS | boolean | Specify if app should send SMS. |
| SENDGRID_PASSWORD | string | |
| SENDGRID_USERNAME | string | |
| SERVICE_USER_AUTH_TOKEN | string | Service auth_token to access API v1 without be venue's manager. |
| SKIP_TRACKABLE_LOG | boolean | |
| SMS_MIN_CREDIT | integer | |
| SMS_PROVIDER_PSWD | string | |
| SMS_PROVIDER_URL | string | |
| SMS_PROVIDER_USER | string | |
| SUPER_DIFF | boolean | Enables or disables the SuperDiff Gem |
| TZ | string | Timezone of the Rails application (e.g.: Europe/Rome) |
| UNICORN_TIMEOUT | integer | Delay in seconds before respond with timeout. |
| UNLEASH_API_KEY | string | API key for Unleash. |
| UNLEASH_DEBUG | boolean | Enable debug mode for Unleash. |
| UNLEASH_URL | string | URL to Unleash server. |
| USE_RESOURCE_UPDATES | boolean | Specify if ResourceUpdate will be used in synch methods. |
| VERBOSE_QUERY_LOGS | integer | Enable verbose query logs. |
| WEB_CONCURRENCY | integer | |
| WHITE_LISTED_IPS_SERVICE | string | Whitelisted IPs to access API v1 as service. |
| WORKER_CONCURRENCY | integer | |