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authorErik Johnston <erikj@jki.re>2016-08-17 10:30:52 +0100
committerGitHub <noreply@github.com>2016-08-17 10:30:52 +0100
commit49043f5ff3173d49252aa40bc675f381bec41a33 (patch)
treea072857c29386f884b1a4f04bc60e772be5857cb /synapse
parentMerge pull request #1015 from matrix-org/erikj/preview_url_fixes (diff)
parentDo it in storage function (diff)
downloadsynapse-49043f5ff3173d49252aa40bc675f381bec41a33.tar.xz
Merge pull request #1016 from matrix-org/erikj/short_circuit_cache
Don't update caches replication stream if tokens haven't advanced
Diffstat (limited to 'synapse')
-rw-r--r--synapse/storage/_base.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 0a2e78fd81..029f6612e6 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -894,6 +894,9 @@ class SQLBaseStore(object):
             )
 
     def get_all_updated_caches(self, last_id, current_id, limit):
+        if last_id == current_id:
+            return defer.succeed([])
+
         def get_all_updated_caches_txn(txn):
             # We purposefully don't bound by the current token, as we want to
             # send across cache invalidations as quickly as possible. Cache