## jabber ##
* **debug** (Boolean) - Enable debug level for the jabber account synchronisation.
-* **logfile** - Logfile for the jabber account synchronisation.
## system ##
* **db_log_index_blacklist** - Blacklist of indexes that shouldn't be watched
* **dbclean** (Boolean) - Enable the automatic database cleanup process
* **dbclean-expire-days** (Integer) - Days after which remote items will be deleted. Own items, and marked or filed items are kept.
-* **default_service_class** -
* **diaspora_test** (Boolean) - For development only. Disables the message transfer.
* **directory** - The path to global directory. If not set then "http://dir.friendica.social" is used.
* **disable_email_validation** (Boolean) - Disables the check if a mail address is in a valid format and can be resolved via DNS.
* **frontend_worker_timeout** - Value in minutes after we think that a frontend task was killed by the webserver. Default value is 10.
* **hsts** (Boolean) - Enables the sending of HTTP Strict Transport Security headers
* **ignore_cache** (Boolean) - For development only. Disables the item cache.
+* **ipv4_resolve** (Boolean) - Resolve IPV4 addresses only. Don't resolve to IPV6. Default value is false.
* **like_no_comment** (Boolean) - Don't update the "commented" value of an item when it is liked.
* **local_block** (Boolean) - Used in conjunction with "block_public".
* **local_search** (Boolean) - Blocks search for users who are not logged in to prevent crawlers from blocking your system.
* **paranoia** (Boolean) - Log out users if their IP address changed.
* **permit_crawling** (Boolean) - Restricts the search for not logged in users to one search per minute.
* **worker_debug** (Boolean) - If enabled, it prints out the number of running processes split by priority.
-* **worker_fetch_limit** - Number of worker tasks that are fetched in a single query. Default is 5.
+* **worker_fetch_limit** - Number of worker tasks that are fetched in a single query. Default is 1.
* **profiler** (Boolean) - Enable internal timings to help optimize code. Needed for "rendertime" addon. Default is false.
* **free_crawls** - Number of "free" searches when "permit_crawling" is activated (Default value is 10)
* **crawl_permit_period** - Period in seconds between allowed searches when the number of free searches is reached and "permit_crawling" is activated (Default value is 60)
* **worker_cooldown** - Cooldown time after each worker function call. Default value is 0 seconds.
* **xrd_timeout** - Timeout for fetching the XRD links. Default value is 20 seconds.
-## service_class ##
-
-* **upgrade_link** -
-
## experimental ##
* **exp_themes** (Boolean) - Show experimental themes as well.