improve article indexing

dispatch/migrations/0104_auto_20210507_1203.py

@@ -0,0 +1,25 @@
+# Generated by Django 3.1.8 on 2021-05-07 19:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dispatch', '0103_auto_20210505_0050'),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name='article',
+            index=models.Index(fields=['-published_at'], name='dispatch_ar_publish_cc3607_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='article',
+            index=models.Index(fields=['head', 'is_published'], name='dispatch_ar_head_faebef_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='article',
+            index=models.Index(fields=['section'], name='dispatch_ar_section_6fccdb_idx'),
+        ),
+    ]

dispatch/modules/content/models.py

@@ -4,6 +4,8 @@
 import uuid
 import datetime
 
+from django.db import models
+
 from sys import getsizeof
 from jsonfield import JSONField
 from PIL import Image as Img
@@ -413,6 +415,13 @@ def save_subsection(self, subsection_id):
         """ Save the subsection to the parent article """
         Article.objects.filter(parent_id=self.parent.id).update(subsection_id=subsection_id)
 
+    class Meta:
+        indexes = [
+            models.Index(fields=['-published_at']),
+            models.Index(fields=['head', 'is_published']),
+            models.Index(fields=['section']),
+        ]
+
 class Subsection(Model, AuthorMixin):
     name = CharField(max_length=100, unique=True)
     slug = SlugField(unique=True)