Description:
pythonthrottle 0.2.0
python redis backed limiter
sliding log or fixed window limiter
This module mainly offer two limiter
FixedWindowLimiter
simply using redis incr, which about 10 times the speed of the sliding version but the limit is not smooth, may overflow a threshold size near the gap between two intervals
SlidingWindowLimiter
using redis ordered set, slow but offers more smooth limit and more extendability
installation
pip install python-throttle
dummy example usage:
reminder: use name_space to avoid possible conflict on the same key
import time
from limiter import FixedWindowLimiter
TEST_REDIS_CONFIG = {'host': 'localhost','port': 6379,'db': 10}
ip = "who are you?"
throttle = FixedWindowLimiter(threshold=2, interval=3, redis_config=TEST_REDIS_CONFIG, name_space="default")
print("first time, blocked?: {}".format(throttle.exceeded(ip)))
print("second time, blocked?: {}".format(throttle.exceeded(ip)))
print("now I block you, blocked?: {}".format(throttle.exceeded(ip)))
time.sleep(3)
print("refill energy, blocked?: {}".format(throttle.exceeded(ip)))
ouput:
first time blocked?: False
second time blocked?: False
now I block you blocked?: True
refill energy blocked?: False
dummy beach mark
It is from my unittest and not accurate,
rate_counter_pressure_test: SlidingRedisCounter
rate_counter_pressure_test: SlidingRedisCounter time count: 1.0075314449495636
rate_counter_pressure_test: FixedWindowRedisCounter
rate_counter_pressure_test: FixedWindowRedisCounter time count: 0.13711917598266155
License
For personal and professional use. You cannot resell or redistribute these repositories in their original state.
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