If you're looking for wsgi rate limiting, take a look at swift's rate limiting middleware. It's distributed, simple (uses memcached to keep track of what's going on), supports multiple tiers of rate limiting (with interpolation between them), and white/black lists.
While swift's rate limiting is tuned for swift, its technique could be pretty simply adapted to other applications. Swift's rate limiting is swift-specific in what it checks to rate limit on. Those checks should be able to be adapted to other use cases. source: https://github.com/openstack/swift/blob/master/swift/common/middleware/ratelimit.py docs: https://github.com/openstack/swift/blob/master/doc/source/ratelimit.rst sample config: https://github.com/openstack/swift/blob/master/etc/proxy-server.conf-sample#L118 --John On Mar 16, 2012, at 4:45 PM, Kevin L. Mitchell wrote: > Howdy, folks. I've been working on a replacement for nova's > rate-limiting middleware that will handle the multiple-node case, and > I've developed a fairly generic rate-limiting package, along with a > second package that adapts it to nova. (This means you could also use > this rate-limiting setup with, say, glance, or with any other project > that uses Python middleware.) Here is some information: > > * Turnstile > Turnstile is a piece of WSGI middleware that performs true distributed > rate-limiting. System administrators can run an API on multiple > nodes, then place this middleware in the pipeline prior to the > application. Turnstile uses a Redis database to track the rate at > which users are hitting the API, and can then apply configured rate > limits, even if each request was made against a different API node. > > - https://github.com/klmitch/turnstile > - http://pypi.python.org/pypi/turnstile > > * nova_limits > This package provides the ``nova_limits`` Python module, which > contains the ``nova_preprocess()`` preprocessor, the > ``NovaClassLimit`` limit class, and the ``NovaTurnstileMiddleware`` > replacement middleware class, all for use with Turnstile. These > pieces work together to provide class-based rate limiting integration > with nova. > > - https://github.com/klmitch/nova_limits > - http://pypi.python.org/pypi/nova_limits > > Both packages should be fairly well documented (start with README.rst), > and please feel free to log issues or make pull requests. > -- > Kevin L. Mitchell <kevin.mitch...@rackspace.com> > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp
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