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SickRage/lib/shove/cache/memlru.py

39 lines
856 B
Python

# -*- coding: utf-8 -*-
'''
Thread-safe in-memory cache using LRU.
The shove psuedo-URL for a memory cache is:
memlru://
'''
import copy
import threading
from shove import synchronized
from shove.cache.simplelru import SimpleLRUCache
class MemoryLRUCache(SimpleLRUCache):
'''Thread-safe in-memory cache backend using LRU.'''
def __init__(self, engine, **kw):
super(MemoryLRUCache, self).__init__(engine, **kw)
self._lock = threading.Condition()
@synchronized
def __setitem__(self, key, value):
super(MemoryLRUCache, self).__setitem__(key, value)
@synchronized
def __getitem__(self, key):
return copy.deepcopy(super(MemoryLRUCache, self).__getitem__(key))
@synchronized
def __delitem__(self, key):
super(MemoryLRUCache, self).__delitem__(key)
__all__ = ['MemoryLRUCache']