Contact suggestions are now cached

doc/database/db_account-suggestion.md

@@ -0,0 +1,32 @@
+Table account-suggestion
+===========
+
+Account suggestion
+
+Fields
+------
+
+| Field  | Description                                                  | Type               | Null | Key | Default | Extra |
+| ------ | ------------------------------------------------------------ | ------------------ | ---- | --- | ------- | ----- |
+| uri-id | Id of the item-uri table entry that contains the account url | int unsigned       | NO   | PRI | NULL    |       |
+| uid    | User ID                                                      | mediumint unsigned | NO   | PRI | NULL    |       |
+| level  | level of closeness                                           | smallint unsigned  | YES  |     | NULL    |       |
+| ignore | If set, this account will not be suggested again             | boolean            | NO   |     | 0       |       |
+
+Indexes
+------------
+
+| Name       | Fields      |
+| ---------- | ----------- |
+| PRIMARY    | uid, uri-id |
+| uri-id_uid | uri-id, uid |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uri-id | [item-uri](help/database/db_item-uri) | id |
+| uid | [user](help/database/db_user) | uid |
+
+Return to [database documentation](help/database)