Extensions Docs Server: Efficient MemcacheFileSystem

chrome/common/extensions/docs/server2/handler.py

Index: chrome/common/extensions/docs/server2/handler.py
diff --git a/chrome/common/extensions/docs/server2/handler.py b/chrome/common/extensions/docs/server2/handler.py
index 4f4f9de7e68122109841c36d7d2bf25b61913b0f..5065f66324a8da89f90d90185bd1b003a450809d 100644
--- a/chrome/common/extensions/docs/server2/handler.py
+++ b/chrome/common/extensions/docs/server2/handler.py
@@ -32,6 +32,7 @@ from appengine_url_fetcher import AppEngineUrlFetcher
 DEFAULT_BRANCH = 'local'
 
 SVN_URL = 'http://src.chromium.org/chrome'
+VIEWVC_URL = 'http://src.chromium.org/viewvc/chrome'
 TRUNK_URL = SVN_URL + '/trunk'
 BRANCH_URL = SVN_URL + '/branches'
 
@@ -62,10 +63,12 @@ def _GetInstanceForBranch(branch, local_path):
   if branch == 'local':
     file_system = LocalFileSystem(local_path)
   else:
-    fetcher = AppEngineUrlFetcher(
-        _GetURLFromBranch(branch) + '/' + EXTENSIONS_PATH)
-    file_system = MemcacheFileSystem(SubversionFileSystem(fetcher),
-                                     AppEngineMemcache(branch))
+    svn_url = _GetURLFromBranch(branch) + '/' + EXTENSIONS_PATH
+    stat_fetcher = AppEngineUrlFetcher(svn_url.replace(SVN_URL, VIEWVC_URL))
+    fetcher = AppEngineUrlFetcher(svn_url)
+    file_system = MemcacheFileSystem(
+        SubversionFileSystem(fetcher, stat_fetcher),
+        AppEngineMemcache(branch))
 
   cache_builder = FileSystemCache.Builder(file_system)
   api_list_data_source = APIListDataSource(cache_builder,