diff --git a/obmc/utils/pathtree.py b/obmc/utils/pathtree.py
index da56cfb..dc48609 100644
--- a/obmc/utils/pathtree.py
+++ b/obmc/utils/pathtree.py
@@ -94,6 +94,7 @@
 class PathTree:
     def __init__(self):
         self.root = {}
+        self.cache = {}
 
     def _try_delete_parent(self, elements):
         if len(elements) == 1:
@@ -131,6 +132,7 @@
         return True
 
     def __delitem__(self, key):
+        del self.cache[key]
         kids = 'children'
         elements = ['/'] + list(filter(bool, key.split('/')))
         d = self.root
@@ -144,6 +146,7 @@
         self._try_delete_parent(elements)
 
     def __setitem__(self, key, value):
+        self.cache[key] = value
         kids = 'children'
         elements = ['/'] + list(filter(bool, key.split('/')))
         d = self.root
@@ -154,7 +157,7 @@
         d[elements[-1]].update({kids: children, 'data': value})
 
     def __getitem__(self, key):
-        return self._get_node(key).get('data')
+        return self.cache[key]
 
     def setdefault(self, key, default):
         if not self.get(key):