Add indices to help the series list page. The project is almost always
used as a search key, either directly or through a parent project, so
include both a variant with the project and one without. The sorting
keys are left last, while filter keys should come first.
This reduces the SELECT COUNT(*) query in the series list from 180 ms
to 5 ms on a full dump from a few weeks ago.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
api/migrations/0037_auto_20181031_1439.py | 19 +++++++++++++++++++
api/models.py | 4 ++++
2 files changed, 23 insertions(+)
create mode 100644 api/migrations/0037_auto_20181031_1439.py
diff --git a/api/migrations/0037_auto_20181031_1439.py b/api/migrations/0037_auto_20181031_1439.py
new file mode 100644
index 0000000..ca75e37
--- /dev/null
+++ b/api/migrations/0037_auto_20181031_1439.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.15 on 2018-10-31 14:39
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+ dependencies = [
+ ('api', '0036_populate_message_tags'),
+ ]
+
+ operations = [
+ migrations.AlterIndexTogether(
+ name='message',
+ index_together=set([('is_series_head', 'project', 'date'), ('is_series_head', 'date'), ('is_series_head', 'last_reply_date'), ('is_series_head', 'project', 'last_reply_date')]),
+ ),
+ ]
diff --git a/api/models.py b/api/models.py
index ab0bd06..09758f6 100644
--- a/api/models.py
+++ b/api/models.py
@@ -714,6 +714,10 @@ class Message(models.Model):
class Meta:
unique_together = ('project', 'message_id',)
+ index_together = [('is_series_head', 'project', 'last_reply_date'),
+ ('is_series_head', 'project', 'date'),
+ ('is_series_head', 'last_reply_date'),
+ ('is_series_head', 'date')]
class MessageResult(Result):
message = models.ForeignKey(Message, related_name='results')
--
2.17.1
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