Python: diskcache implements file-based data caching

diskcache is a data cache based on Sqlite files

If you don’t want to use redis as a cache, you can use diskcache instead to reduce your dependence on redis.

document

• https://grantjenks.com/docs/diskcache/
• https://github.com/grantjenks/python-diskcache
• https://pypi.org/project/diskcache/

Install

pip install diskcache

Example

from diskcache import Cache

# 指定文件夹
cache = Cache('./cache')

# 存
cache.set('name', 'tom')

# 取
print(cache.get('name'))

As you can see, 3 files were generated in the directory

$ tree cache
cache
├── cache.db
├── cache.db-shm
└── cache.db-wal

Set expiration time

import time

from diskcache import Cache


# 指定文件夹
cache = Cache('./cache')

# 存，单位：秒s
cache.set('name', 'tom', expire=1)

# 取
time.sleep(2)
print(cache.get('name'))
# None

Reference article

• Python crawler advanced article - diskcache cache