From 70a8608749e0c1ec7a993a9effc424303af24738 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Tue, 9 Feb 2016 14:27:29 +0000
Subject: [PATCH] Invalidate get_last_receipt_event_id_for_user cache

---
 synapse/storage/receipts.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/synapse/storage/receipts.py b/synapse/storage/receipts.py
index 1aff9f070..4202a6b3d 100644
--- a/synapse/storage/receipts.py
+++ b/synapse/storage/receipts.py
@@ -240,6 +240,11 @@ class ReceiptsStore(SQLBaseStore):
             room_id, stream_id
         )
 
+        txn.call_after(
+            self.get_last_receipt_event_id_for_user.invalidate,
+            (user_id, room_id, receipt_type)
+        )
+
         # We don't want to clobber receipts for more recent events, so we
         # have to compare orderings of existing receipts
         sql = (