Adding extra index to improve slow queries speed

taiga/timeline/migrations/0007_auto_20170406_0615.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.6 on 2017-04-06 06:15
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('timeline', '0006_json_to_jsonb'),
+    ]
+
+    operations = [
+        migrations.AlterIndexTogether(
+            name='timeline',
+            index_together=set([('content_type', 'object_id', 'namespace'), ('namespace', 'created')]),
+        ),
+    ]

taiga/timeline/models.py

@@ -38,7 +38,8 @@ class Timeline(models.Model):
     created = models.DateTimeField(default=timezone.now, db_index=True)
 
     class Meta:
-        index_together = [('content_type', 'object_id', 'namespace'), ]
+        index_together = [('content_type', 'object_id', 'namespace'),
+                          ('namespace', 'created'),]
 
 # Register all implementations
 from .timeline_implementations import *

taiga/users/migrations/0024_auto_20170406_0727.py

@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.6 on 2017-04-06 07:27
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0023_json_to_jsonb'),
+    ]
+
+    operations = [
+        migrations.RunSQL("CREATE INDEX ON users_user (UPPER('username'))"),
+        migrations.RunSQL("CREATE INDEX ON users_user (UPPER('email'))"),
+    ]