Merge pull request #635 from aiarena/chore/improve-perf-on-news-and-m…

…atch-participations

Improve selection performance on news and match participations

aiarena/core/migrations/0071_auto_20231017_0957.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.2.16 on 2023-10-17 09:57
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0070_competition_indepth_bot_statistics_enabled'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='matchparticipation',
+            name='participant_number',
+            field=models.PositiveSmallIntegerField(db_index=True),
+        ),
+        migrations.AlterField(
+            model_name='news',
+            name='created',
+            field=models.DateTimeField(auto_now_add=True, db_index=True),
+        ),
+    ]

aiarena/core/models/match_participation.py

@@ -33,7 +33,7 @@ class MatchParticipation(models.Model, LockableModelMixin):
 
     )
     match = models.ForeignKey(Match, on_delete=models.CASCADE)
-    participant_number = models.PositiveSmallIntegerField()
+    participant_number = models.PositiveSmallIntegerField(db_index=True)
     bot = models.ForeignKey(Bot, on_delete=models.PROTECT)
     starting_elo = models.SmallIntegerField(null=True)
     """The bot's ELO at the time the match started

aiarena/core/models/news.py

@@ -6,7 +6,7 @@
 
 
 class News(models.Model):
-    created = models.DateTimeField(auto_now_add=True)
+    created = models.DateTimeField(auto_now_add=True, db_index=True)
     title = models.TextField(max_length=40, blank=True, null=True)
     text = models.TextField(max_length=500, blank=False, null=False)
     yt_link = models.URLField(blank=True, null=True)