Documentation: add note about WAL mode with SQLite

docs/administration.md

@@ -565,19 +565,15 @@ document.
 
 ### Managing encryption {#encryption}
 
-Documents can be stored in Paperless using GnuPG encryption.
-
 !!! warning
 
-    Encryption is deprecated since [paperless-ng 0.9](changelog.md#paperless-ng-090) and doesn't really
+    Encryption was removed in [paperless-ng 0.9](changelog.md#paperless-ng-090)
-    provide any additional security, since you have to store the passphrase
+    because it did not really provide any additional security, the passphrase
-    in a configuration file on the same system as the encrypted documents
+    was stored in a configuration file on the same system as the documents.
-    for paperless to work. Furthermore, the entire text content of the
+    Furthermore, the entire text content of the documents is stored plain in
-    documents is stored plain in the database, even if your documents are
+    the database, even if your documents are encrypted. Filenames are not
-    encrypted. Filenames are not encrypted as well.
+    encrypted as well. Finally, the web server provides transparent access to
-
+    your encrypted documents.
-    Also, the web server provides transparent access to your encrypted
-    documents.
 
     Consider running paperless on an encrypted filesystem instead, which
     will then at least provide security against physical hardware theft.

docs/api.md

@@ -1,7 +1,7 @@
 # The REST API
 
 Paperless makes use of the [Django REST
-Framework](https://django-rest-framework.org/) standard API interface. It
+Framework](https://www.django-rest-framework.org/) standard API interface. It
 provides a browsable API for most of its endpoints, which you can
 inspect at `http://<paperless-host>:<port>/api/`. This also documents
 most of the available filters and ordering fields.
@@ -444,7 +444,7 @@ The following methods are supported:
 -   `remove_tag`
     -   Requires `parameters`: `{ "tag": TAG_ID }`
 -   `modify_tags`
-    -   Requires `parameters`: `{ "add_tags": [LIST_OF_TAG_IDS] }` and / or `{ "remove_tags": [LIST_OF_TAG_IDS] }`
+    -   Requires `parameters`: `{ "add_tags": [LIST_OF_TAG_IDS] }` and `{ "remove_tags": [LIST_OF_TAG_IDS] }`
 -   `delete`
     -   No `parameters` required
 -   `reprocess`

docs/setup.md

@@ -713,7 +713,8 @@ Paperless runs on Raspberry Pi. However, some things are rather slow on
 the Pi and configuring some options in paperless can help improve
 performance immensely:
 
--   Stick with SQLite to save some resources.
+-   Stick with SQLite to save some resources. See [troubleshooting](troubleshooting.md#log-reports-creating-paperlesstask-failed)
+    if you encounter issues with SQLite locking.
 -   Consider setting [`PAPERLESS_OCR_PAGES`](configuration.md#PAPERLESS_OCR_PAGES) to 1, so that paperless will
     only OCR the first page of your documents. In most cases, this page
     contains enough information to be able to find it.

docs/troubleshooting.md

@@ -320,7 +320,9 @@ many workers attempting to access the database simultaneously.
 Consider changing to the PostgreSQL database if you will be processing
 many documents at once often. Otherwise, try tweaking the
 [`PAPERLESS_DB_TIMEOUT`](configuration.md#PAPERLESS_DB_TIMEOUT) setting to allow more time for the database to
-unlock. This may have minor performance implications.
+unlock. Additionally, you can change your SQLite database to use ["Write-Ahead Logging"](https://sqlite.org/wal.html).
+These changes may have minor performance implications but can help
+prevent database locking issues.
 
 ## gunicorn fails to start with "is not a valid port number"
 

src/documents/tests/test_api_bulk_edit.py

@@ -211,7 +211,7 @@ class TestBulkEditAPI(DirectoriesMixin, APITestCase):
     def test_api_modify_tags_not_provided(self, m):
         """
         GIVEN:
-            - API data to modify tags is missing modify_tags field
+            - API data to modify tags is missing remove_tags field
         WHEN:
             - API to edit tags is called
         THEN: