* `enabled`: if enabled the instance will parse metadata from attached links to generate link previews
* `ignore_hosts`: list of hosts which will be ignored by the metadata parser. For example `["accounts.google.com", "xss.website"]`, defaults to `[]`.
* `ignore_tld`: list TLDs (top-level domains) which will ignore for parse metadata. default is ["local", "localdomain", "lan"]
+* `parsers`: list of Rich Media parsers
## :fetch_initial_posts
* `enabled`: if enabled, when a new user is federated with, fetch some of their latest posts
* `:search` for the search requests (account & status search etc.)
* `:app_account_creation` for registering user accounts from the same IP address
+* `:relations_actions` for actions on relations with other users (follow, unfollow)
+* `:relation_id_action` for actions on relation with specific another user (follow, unfollow)
* `:statuses_actions` for create / delete / fav / unfav / reblog / unreblog actions on any statuses
* `:status_id_action` for fav / unfav or reblog / unreblog actions on the same status by the same user