Long-polling not works with multiple http server about amfast HOT 4 OPEN

[deleted comment]

The default ConnectionManager and SubscriptionManager classes store message 
data in local memory, so they won't work in a multi-server environment. 
Configure your messaging system with one of the alternate manager classes to 
work in a multi-server environment. I recommend the 
sa_connection_manager.SaConnectionManager and 
sa_subscription_manager.SaSubscriptionManager classes.

thanks for comment~

I am using the memcache-connectionManager and memcache-subscriptionManager, 
because of a little worried about db's performance.

And,the long-polling seems doesnot work with gevent/tornado as http server.

event.wait() is still block,while a new message is ready in other 
coroutine/interpreter

I am using : nginx(upstreaming) + several gevent/tornado process(http server) + 
django/amfast(framework) + logical code

I saw the docstring in httpchannel._waitForMessage method,but I'm not sure 
whether the gevent is a Synchronous servers or not.

env:nginx(upstreaming) + ONE gevent/tornado process(http server) + 
django/amfast(framework) + logical code

when I publish a msg,I got an error below:

File 
"/usr/local/lib/python2.6/dist-packages/AmFast-0.5.3_r536-py2.6-linux-i686.egg/a
mfast/remoting/thread_pool.py", line 64, in run
    task()
  File "/usr/local/lib/python2.6/dist-packages/AmFast-0.5.3_r536-py2.6-linux-i686.egg/amfast/remoting/thread_pool.py", line 12, in __call__
    self.function(*self.args, **self.kwargs)
  File "/usr/local/lib/python2.6/dist-packages/AmFast-0.5.3_r536-py2.6-linux-i686.egg/amfast/remoting/channel.py", line 438, in _notifyConnections
    if connection.notify_func is not None:
  File "/usr/local/lib/python2.6/dist-packages/AmFast-0.5.3_r536-py2.6-linux-i686.egg/amfast/remoting/connection.py", line 102, in _getNotifyFunc
    return self._manager.getNotifyFunc(self)
  File "/usr/local/lib/python2.6/dist-packages/AmFast-0.5.3_r536-py2.6-linux-i686.egg/amfast/remoting/memcache_connection_manager.py", line 158, in getNotifyFunc
    return connection._getNotifyFuncById(connection._notify_func_id)
AttributeError: 'Connection' object has no attribute '_notify_func_id'


I read the code in remoting/memcache_connection_manager.py:
    def getNotifyFunc(self, connection):
        notify_func_id = self.mc.get(self.getKeyName(connection.id, 'notify_func_id'))

        if notify_func_id is None:
            return None
        else:
            return connection._getNotifyFuncById(connection._notify_func_id)


I guess the last line should be:
return connection._getNotifyFuncById(notify_func_id)
instead of 
return connection._getNotifyFuncById(connection._notify_func_id)