Document cleanup settings

content/deployment/configuration.md

@@ -169,6 +169,20 @@ Hostname and optional port number for a [memcached](https://www.memcached.org/)
 
 Required only with `memcached` and `redis` caches; ignored for other cache types.
 
+## `cleanup`
+
+*Since Arkindex 1.6.1.*
+
+This section defines configuration items related to the `arkindex cleanup` administrator command.
+
+### `cleanup.model_delay`
+
+Minimum days between the archival date of a Model and its deletion, if it does not have any associated ML results. Defaults to 30 days.
+
+### `cleanup.worker_delay`
+
+Minimum days between the archival date of a Worker and its deletion, if it does not have any associated ML results. Defaults to 30 days.
+
 ## `cors`
 
 This section defines configuration items specific to Cross-Origin Resource Sharing on the REST API.