Sometimes you may not want people to call a certain action many times in a short period of time. dj-webmachine allows you to throttle requests using different methods.
This rate limiter strategy throttles the application by enforcing a minimal interval (by default, 1 second) betweeb subsequent allowed HTTP requests.
In the resource object:
from webmachine import Resource
from webmachine.throttle import Interval
class MyResource(Resource):
...
def forbidden(self, req, resp):
return Interval(self).allowed(req)
You can throttle according to the request method too by simply checking the request instance:
def forbidden(self, req, resp):
if req.method == 'POST':
return Interval(self).allowed(req)
You can also throttle using the route decorator:
def throttle_post(req, resp):
if req.method == 'POST':
return Interval(self).allowed(req)
@wm.route("^$", forbbiden=throttle_post)
def myres(req, resp):
...
This rate limiter strategy throttles the application by defining a maximum number of allowed HTTP requests in a time window.
This rate limiter strategy throttles the application by defining a maximum number of allowed HTTP requests per day (by default, 86,400 requests per 24 hours, which works out to an average of 1 request per second).
Note
This strategy doesn’t use a sliding time window, but rather tracks requests per calendar day. This means that the throttling counter is reset at midnight (according to the server’s local timezone) every night.
from webmachine import Resource
from webmachine.throttle import Daily
class MyResource(Resource):
...
def forbidden(self, req, resp):
return Daily(self).allowed(req)
This rate limiter strategy throttles the application by defining a maximum number of allowed HTTP requests per hour (by default, 3,600 requests per 60 minutes, which works out to an average of 1 request per second).
Note
Note that this strategy doesn’t use a sliding time window, but rather tracks requests per distinct hour. This means that the throttling counter is reset every hour on the hour (according to the server’s local timezone).
from webmachine import Resource
from webmachine.throttle import Hourly
class MyResource(Resource):
...
def forbidden(self, req, resp):
return Hourly(self).allowed(req)