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A basic but fast, persistent and threadsafe caching system

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# A basic but fast, persistent and threadsafe caching system

**Basic commands**

Importing required modules first:

from webscrapetools import urlcaching

Initializing the cache:


The option _expiry_days_ sets the cache expiry period, default is 10 days.

This is a required step: otherwise responses to url calls will simply not be cached.
Cache data are stored in the specified folder, so that re-using the same string makes the cache persistent. This creates
the folder on the fly if it does not exist.
The following command cleans up the cache, making sure we start with no prior data:


Opening an url with the following command stores the repsonse content behind the scene, so that subsequent calls will
not hit the network.


**Full example**

from webscrapetools import urlcaching
import time

# Initializing the cache

# Making sure we start from scratch

# Demo with 5 identical calls... only the first one is delayed, all others are hitting the cache
count_calls = 1
while count_calls <= 5:
start_time = time.time()
duration = time.time() - start_time
print('duration for call {}: {:0.2f}'.format(count_calls, duration))
count_calls += 1

# Cleaning up

The code above outputs the following:

duration for call 1: 6.74
duration for call 2: 0.00
duration for call 3: 0.00
duration for call 4: 0.00
duration for call 5: 0.00

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