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#!/usr/bin/env python
"""
An example of benchmarking cache write speeds with semi-randomized response content
"""
from os import urandom
from random import random
from time import perf_counter as time
import requests
from requests_cache import CachedResponse, CachedSession
BASE_RESPONSE = requests.get('https://httpbin.org/get')
CACHE_NAME = 'rubbish_bin.sqlite'
ITERATIONS = 5000
MAX_RESPONSE_SIZE = 1024 * 1024
def test_write_speed(session):
print(f'Testing write speed over {ITERATIONS} iterations')
start = time()
for i in range(ITERATIONS):
new_response = get_randomized_response(i)
session.cache.save_response(new_response)
elapsed = time() - start
avg = (elapsed / ITERATIONS) * 1000
print(f'Elapsed: {elapsed:.3f} (avg {avg:.3f}ms per write)')
def test_read_speed(session):
print(f'Testing read speed over {ITERATIONS} iterations')
keys = list(session.cache.responses.keys())
start = time()
for i in range(ITERATIONS):
key = keys[i % ITERATIONS]
session.cache.get_response(key)
elapsed = time() - start
avg = (elapsed / ITERATIONS) * 1000
print(f'Elapsed: {elapsed:.3f} (avg {avg:.3f}ms per read)')
def get_randomized_response(i=0):
"""Get a response with randomized content"""
new_response = CachedResponse.from_response(BASE_RESPONSE)
n_bytes = int(random() * MAX_RESPONSE_SIZE)
new_response._content = urandom(n_bytes)
new_response.request.url += f'/response_{i}'
return new_response
if __name__ == '__main__':
session = CachedSession(CACHE_NAME, backend='sqlite')
test_write_speed(session)
test_read_speed(session)
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