* **allowed_link_protocols** (Array) - Allowed protocols in links URLs, add at your own risk. http is always allowed.
* **birthday_input_format** - Default value is "ymd".
* **block_local_dir** (Boolean) - Blocks the access to the directory of the local users.
+* **auth_cookie_lifetime** (Integer) - Number of days that should pass without any activity from a before before the users who choosed "Remember me" when logging in from that browser is considered logged out. Defaults to 7.
+* **curl_range_bytes** - Maximum number of bytes that should be fetched. Default is 0, which mean "no limit".
+* **db_log** - Name of a logfile to log slow database queries
+* **db_loglimit** - If a database call lasts longer than this value it is logged
+* **db_log_index** - Name of a logfile to log queries with bad indexes
+* **db_log_index_watch** - Watchlist of indexes to watch
+* **db_loglimit_index** - Number of index rows needed to be logged for indexes on the watchlist
+* **db_loglimit_index_high** - Number of index rows to be logged anyway (for any index)
+* **db_log_index_blacklist** - Blacklist of indexes that shouldn't be watched
* **dbclean** (Boolean) - Enable the automatic database cleanup process
* **default_service_class** -
* **delivery_batch_count** - Number of deliveries per process. Default value is 1. (Disabled when using the worker)