LiteCache

A Python SQLite-backed key-value cache with data TTL

Example of Usage

Import and Setup

>>> from litecache import LiteCache
>>>
>>> cache = LiteCache()
>>> cache
LiteCache(db=:memory:, ttl=1209600, save_on_exit:True)
>>>
>>> cache = LiteCache('test.db', ttl=600)  # ttl is seconds
>>> cache
LiteCache(db=test.db, ttl=600, save_on_exit:True)

Checking for Key

>>> cache.has('test')
False
>>> 'test' in cache
False

Getting a Key

>>> cache.get('test')
KeyError: 'test'
>>> cache.get('test', 'default')
'default'
>>> cache['test']
KeyError: 'test'

Setting a Key-Value Pair

>>> cache.set('test', {'test': 1})
>>> 'test' in cache
True
>>> cache.get('test')
{'test': 1}
>>> cache['another'] = 100
>>> cache['another']
100

Rolling Back Key Sets

>>> cache.set('test', {'test': 1})
>>> cache.rollback()
>>> 'test' in cache
False

Saving Changes

>>> cache.set('test', {'test': 1})
>>> cache.save()
>>> cache.rollback()
>>> 'test' in cache
True