Hi all: currently oslo provides lock utility, but unlike other languages, it is class lock, which prevent all instances call the function. IMO, oslo should provide an instance lock, only lock current instance to gain better concurrency. I have written a lock in a patch[1], please consider pick it into oslo [1] https://review.openstack.org/#/c/114154/4/neutron/openstack/common/lockutils.py -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20140903/f1f51a11/attachment.html>