一个基于Python装饰器的缓存库 wrapcache

jopen 7年前

wrapcache

A python Function / Method OUTPUT cache system base on function Decorators.


Source code: https://github.com/hustcc/wrapcache

What's wrapcache?

wrapcache is a decorator that enables caching of return values for functions.

The cache keys are dependent completely on the arguments passed to the function. very simple to use.

Also has some API to Programmatic get cache or remove cache. Support python 2.6 ~ python3.5.

Here's an example of how you might use wrapcache:

import wrapcache    from time import sleep  import random    @wrapcache.wrapcache(timeout = 3)  def need_cache_function(input, t = 2, o = 3):      sleep(2)      return random.randint(1, 100)    if __name__ == "__main__":      for i in range(10):          sleep(1)          print(need_cache_function(1, t = 2, o = 3))        #get cache Programmatic      key_func = wrapcache.keyof(need_cache_function, 1, o = 3, t = 2)      print(wrapcache.get(key_func))      #remove cache Programmatic      print(wrapcache.remove(wrapcache.keyof(need_cache_function, 1, o = 3, t = 2)))

How to Install and Use?

Install

Three way to install:

1. Use tool install

  • easy_install wrapcache

or

  • pip install wrapcache / pip3 install wrapcache

2. Download to install

3. Manual installation

  • Manual installation: Put wrapcache folder into current directory or site-packages, then import wrapcache to use.

Usage

Decorators

import wrapcache  @wrapcache.wrapcache(timeout = 3)  def need_cache_function():      return 'hello wrapcache'

API

  1. wrapcache.keyof(func, *args, **kws): get the key of function output cache.
  2. wrapcache.get(key, adapter = MemoryAdapter): get the value of cache.
  3. wrapcache.set(key, value, adapter = MemoryAdapter): set cache use code.
  4. wrapcache.remove(key, adapter = MemoryAdapter): remove a cache.
  5. wrapcache.flush(adapter = MemoryAdapter): clear all the cache.

The API 2~5, need to input a adapter to set which db to flush.

TODO

  • add redis and memcache supported.
  • package to pip server.

项目地址: https://github.com/hustcc/wrapcache