# HG changeset patch
# User Philippe Pepiot <ph@itsalwaysdns.eu>
# Date 1585575002 -7200
# Node ID 01810941a4be923e8331976998884124c9a7cf4d
# Parent  2c3a8a4f5a021198c8577aa5aef594ce23b75e69
[server] use a LifoQueue in _CnxSetPool

In postgresql, some cache is attached to the connection. Using a LifoQueue
(last-in, first-out) makes a few connections to get the most load which give
best performance.

diff -r 2c3a8a4f5a02 -r 01810941a4be cubicweb/server/repository.py
--- a/cubicweb/server/repository.py	Mon Mar 30 15:23:56 2020 +0200
+++ b/cubicweb/server/repository.py	Mon Mar 30 15:30:02 2020 +0200
@@ -173,7 +173,7 @@
     def __init__(self, source, size):
         super().__init__(source)
         self._cnxsets = []
-        self._queue = queue.Queue()
+        self._queue = queue.LifoQueue()
 
         for i in range(size):
             self._queue.put_nowait(self._new_cnxset())