xtremcache 2.2.0

Handle generic file and directories caching

xtremcache

xtremcache is a Python package dedicated to handle generic file and directories caching on Windows or Linux. The goal of this module is to be able to cache a file or directory with a unique identifier of your choice and later uncache to a specific location. The directory where the cached files are located is local. The concurrent access (reading and writing) on chached archives is handle by a small data base located in the local data directory.

Installation

xtremcache is available on PyPi.

Tests

Tests are written following unittest framework. Some dependencies are needed (test-requirements.txt). If you want to run tests, enter the following command at the root level of the package:

python -m unittest discover -s tests # All tests
python -m unittest discover -s tests/unit # Unit tests
python -m unittest discover -s tests/integration # Integration tests

Usage

Cache and uncache example

• Create CacheManager with optional data location and the maximum size in Mo of this cache directory.
• Cache a directory with unique id to find it lather.
• Uncache with unique id to a specifique directory.

Python:

from xtremcache.cachemanager import CacheManager

cache_manager = CacheManager(
    cache_dir='/tmp/xtremcache',
    max_size=20_000_000)
cache_manager.cache(
    id='UUID',
    path='/tmp/dir_to_cache')
cache_manager.uncache(
    id='UUID',
    path='/tmp/destination_dir')

Shell:

xtremcache config set cache_dir '/tmp/xtremcache' --local
xtremcache config set max_size '20m' --local
xtremcache cache --id 'UUID' '/tmp/dir_to_cache'
xtremcache uncache --id 'UUID' '/tmp/destination_dir'

---

Override cached example

• Create CacheManager with data location and the maximum size in Mo of this cache directory
• Cache a directory with unique id to find it lather
• Override last unique id to a new directory

Python:

from xtremcache.cachemanager import CacheManager

cache_manager = CacheManager(
    cache_dir='/tmp/xtremcache',
    max_size=20_000_000)
cache_manager.cache(
    id='UUID',
    path='/tmp/dir_to_cache')
cache_manager.cache(
    id='UUID',
    path='/tmp/new_dir_to_cache',
    force=True)

Shell:

xtremcache config set cache_dir '/tmp/xtremcache' --local
xtremcache config set max_size '20m' --local
xtremcache cache --id 'UUID' '/tmp/dir_to_cache'
xtremcache cache --force --id 'UUID' '/tmp/new_dir_to_cache'

---

Cache and clean example

• Create CacheManager with data location and the maximum size in Mo of this cache directory
• Cache a directory with unique id to find it lather
• Remove chached file

Python:

from xtremcache.cachemanager import CacheManager

cache_manager = CacheManager(
    cache_dir='/tmp/xtremcache',
    max_size='20m')
cache_manager.cache(
    id='UUID',
    path='/tmp/dir_to_cache')
cache_manager.remove(
    id='UUID')

Shell:

xtremcache config set cache_dir '/tmp/xtremcache' --local
xtremcache config set max_size '20m' --local
xtremcache cache --id 'UUID' '/tmp/dir_to_cache'
xtremcache remove --id 'UUID'

---

Cache and clean all example

• Create CacheManager with data location and the maximum size in Mo of this cache directory
• Cache a directory with unique id to find it lather
• Remove all chached files

Python:

from xtremcache.cachemanager import CacheManager

cache_manager = CacheManager(
    cache_dir='/tmp/xtremcache',
    max_size='20m')
cache_manager.cache(
    id='UUID',
    path='/tmp/dir_to_cache')
cache_manager.remove()

Shell:

xtremcache config set cache_dir '/tmp/xtremcache' --local
xtremcache config set max_size '20m' --local
xtremcache cache --id 'UUID' '/tmp/dir_to_cache'
xtremcache remove