From 6e73a1bebff4b28138f0514bef5512c5b58a8c3e Mon Sep 17 00:00:00 2001
From: Unrud <unrud@outlook.com>
Date: Sun, 29 Apr 2018 21:39:07 +0200
Subject: [PATCH] Don't reuse cache locks between instances of class

---
 radicale/storage.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/radicale/storage.py b/radicale/storage.py
index 9f758b3..56e8b21 100644
--- a/radicale/storage.py
+++ b/radicale/storage.py
@@ -761,6 +761,10 @@ class Collection(BaseCollection):
             "storage", "filesystem_close_lock_file")
         cls._lock = FileBackedRwLock(lock_path, close_lock_file)
 
+        # init cache lock
+        cls._cache_locks = {}
+        cls._cache_locks_lock = threading.Lock()
+
     def __init__(self, path, principal=None, folder=None,
                  filesystem_path=None):
         # DEPRECATED: Remove principal and folder attributes
@@ -1309,9 +1313,6 @@ class Collection(BaseCollection):
             pass
         return content
 
-    _cache_locks = {}
-    _cache_locks_lock = threading.Lock()
-
     @contextmanager
     def _acquire_cache_lock(self, ns=""):
         if "/" in ns: