fix: slow SQL query in post views

etc/crontab

@@ -5,8 +5,9 @@
 30 */4 * * 1-6 root cd /app && python3 manage.py send_best_comments  >/proc/1/fd/1 2>/proc/1/fd/2
 0 10 * * 1 root cd /app && python3 manage.py send_weekly_digest --production true  >/proc/1/fd/1 2>/proc/1/fd/2
 0 12 * * * root cd /app && python3 manage.py send_subscription_expired --production true  >/proc/1/fd/1 2>/proc/1/fd/2
+0 2 * * 6 root cd /app && python3 manage.py cleanup_post_views  >/proc/1/fd/1 2>/proc/1/fd/2
 0 2 * * 7 root cd /app && python3 manage.py rebuild_search_index  >/proc/1/fd/1 2>/proc/1/fd/2
 0 8 * * * root cd /app && python3 manage.py replay_stuck_reviews  >/proc/1/fd/1 2>/proc/1/fd/2
-0 8 * * * root find /app/gdpr/downloads/ -mindepth 1 -mtime +3 -type f -delete >/proc/1/fd/1 2>/proc/1/fd/2
+0 4 * * * root find /app/gdpr/downloads/ -mindepth 1 -mtime +3 -type f -delete >/proc/1/fd/1 2>/proc/1/fd/2
 13 * * * * root cd /app && python3 manage.py update_hotness  >/proc/1/fd/1 2>/proc/1/fd/2
 0 7 * * 3,6 root cd /app && python3 manage.py promote_one_old_post_on_main  >/proc/1/fd/1 2>/proc/1/fd/2

notifications/telegram/templates/messages/weekly_digest_announce.html

@@ -1,7 +1,5 @@
-{% load posts %}🤘 Клубный журнал. Итоги недели. Выпуск #{{ issue_number }}
+{% load posts %}🤘 <b><a href="{{ settings.APP_HOST }}{% url "show_post" post.type post.slug %}">Клубный журнал. Итоги недели. Выпуск #{{ issue_number }}{% if digest_title %}: {{ digest_title }}{% endif %}</a></b>
 
-{% if digest_title %}<b><a href="{{ settings.APP_HOST }}{% url "show_post" post.type post.slug %}">{{ digest_title }}</a></b>{% endif %}
-
-{% if digest_intro %}{% render_tg digest_intro 3500 %}{% endif %}
-
-👉 {{ settings.APP_HOST }}{% url "show_post" post.type post.slug %}
+{% if digest_intro %}{% render_tg digest_intro 3500 %}
+{% endif %}
+👉 <b>Читать полностью: {{ settings.APP_HOST }}{% url "show_post" post.type post.slug %}</b>

posts/migrations/0028_postview_post_views_post_id_49dd7e_idx.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.2.13 on 2025-01-17 10:59
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('posts', '0027_auto_20230731_1014'),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name='postview',
+            index=models.Index(fields=['post', 'ipaddress'], name='post_views_post_id_49dd7e_idx'),
+        ),
+    ]

posts/models/views.py

@@ -27,6 +27,9 @@ class PostView(models.Model):
     class Meta:
         db_table = "post_views"
         unique_together = [["user", "post"]]
+        indexes = [
+            models.Index(fields=["post", "ipaddress"])
+        ]
 
     @classmethod
     def register_view(cls, request, user, post):
@@ -60,6 +63,7 @@ def register_anonymous_view(cls, request, post):
             ipaddress=parse_ip_address(request),
         ).first()
 
+        # use this instead get_or_create because multiple objects can be returned
         if not post_view:
             post_view = PostView.objects.create(
                 post=post,