[MOB-1199] dev: update index constraints for notifications to optimize query performance (makeplane#7870)

* dev: updated the index constraints for notification

* dev: updated migration file with AddIndexConcurrently

* dev: handled indexing for file asset with asset

* bumped migration sequence number

---------

Co-authored-by: Dheeraj Kumar Ketireddy <dheeru0198@gmail.com>

Author: 2 people

apps/api/plane/db/migrations/0111_notification_notif_receiver_status_idx_and_more.py

@@ -0,0 +1,39 @@
+# Generated by Django 4.2.22 on 2025-09-29 15:36
+
+from django.db import migrations, models
+from django.contrib.postgres.operations import AddIndexConcurrently
+
+
+class Migration(migrations.Migration):
+    atomic = False
+
+    dependencies = [
+        ('db', '0110_workspaceuserproperties_navigation_control_preference_and_more'),
+    ]
+
+    operations = [
+        AddIndexConcurrently(
+            model_name='notification',
+            index=models.Index(fields=['receiver', 'workspace', 'read_at', 'created_at'], name='notif_receiver_status_idx'),
+        ),
+        AddIndexConcurrently(
+            model_name='notification',
+            index=models.Index(fields=['receiver', 'workspace', 'entity_name', 'read_at'], name='notif_receiver_entity_idx'),
+        ),
+        AddIndexConcurrently(
+            model_name='notification',
+            index=models.Index(fields=['receiver', 'workspace', 'snoozed_till', 'archived_at'], name='notif_receiver_state_idx'),
+        ),
+        AddIndexConcurrently(
+            model_name='notification',
+            index=models.Index(fields=['receiver', 'workspace', 'sender'], name='notif_receiver_sender_idx'),
+        ),
+        AddIndexConcurrently(
+            model_name='notification',
+            index=models.Index(fields=['workspace', 'entity_identifier', 'entity_name'], name='notif_entity_lookup_idx'),
+        ),
+        AddIndexConcurrently(
+            model_name='fileasset',
+            index=models.Index(fields=['asset'], name='asset_asset_idx'),
+        ),
+    ]

apps/api/plane/db/models/asset.py

@@ -66,6 +66,7 @@ class Meta:
             models.Index(fields=["entity_type"], name="asset_entity_type_idx"),
             models.Index(fields=["entity_identifier"], name="asset_entity_identifier_idx"),
             models.Index(fields=["entity_type", "entity_identifier"], name="asset_entity_idx"),
+            models.Index(fields=["asset"], name="asset_asset_idx"),
         ]
 
     def __str__(self):

apps/api/plane/db/models/notification.py

@@ -38,6 +38,26 @@ class Meta:
             models.Index(fields=["entity_name"], name="notif_entity_name_idx"),
             models.Index(fields=["read_at"], name="notif_read_at_idx"),
             models.Index(fields=["receiver", "read_at"], name="notif_entity_idx"),
+            models.Index(
+                fields=["receiver", "workspace", "read_at", "created_at"],
+                name="notif_receiver_status_idx",
+            ),
+            models.Index(
+                fields=["receiver", "workspace", "entity_name", "read_at"],
+                name="notif_receiver_entity_idx",
+            ),
+            models.Index(
+                fields=["receiver", "workspace", "snoozed_till", "archived_at"],
+                name="notif_receiver_state_idx",
+            ),
+            models.Index(
+                fields=["receiver", "workspace", "sender"],
+                name="notif_receiver_sender_idx",
+            ),
+            models.Index(
+                fields=["workspace", "entity_identifier", "entity_name"],
+                name="notif_entity_lookup_idx",
+            ),
         ]
 
     def __str__(self):