From 25c311eaf603cef8cbf9e6501aad83d53c304ebb Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Fri, 29 Jan 2016 16:52:48 +0000
Subject: Cache get_room_changes_for_user

---
 synapse/storage/stream.py | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'synapse/storage/stream.py')

diff --git a/synapse/storage/stream.py b/synapse/storage/stream.py
index e245d2f914..cc9e623608 100644
--- a/synapse/storage/stream.py
+++ b/synapse/storage/stream.py
@@ -252,6 +252,13 @@ class StreamStore(SQLBaseStore):
         if from_key == to_key:
             return defer.succeed([])
 
+        if from_id:
+            has_changed = self._membership_stream_cache.has_entity_changed(
+                user_id, int(from_id)
+            )
+            if not has_changed:
+                return defer.succeed([])
+
         def f(txn):
             if from_id is not None:
                 sql = (
-- 
cgit 1.4.1