Distributed lock manager for Python

Question

I have a bunch of servers with multiple instances accessing a resource that has a hard limit on requests per second.

I need a mechanism to lock the access on this re

Answer 1

For my cluster I'm using ZooKeeper with python-kazoo library for queues and locks.

Modified example from kazoo api documentation for your purpose: http://kazoo.readthedocs.org/en/latest/api/recipe/lock.html

zk = KazooClient()
lock = zk.Lock("/lockpath", "my-identifier")
if lock.acquire(timeout=1):

   code here

   lock.release()

But you need at least three nodes for ZooKeeper as I remember.