def __init__(self,
default_ttl=None,
expire_interval=60,
touch_on_access=False,
max_items=None,
recent_items=RECENT_SIZE):
"""
@param default_ttl: time to live when using __setitem__ rather than set.
@param expire_interval: time between removals of expired items in seconds. Otherwise,
expired items are removed lazily.
@param touch_on_access: refresh item expire time by ttl when item is accessed.
@param max_items: maximum size of cache. (see replacement algorithm above)
"""
self._exp = IndexedMultiMap(
) # expiration times. Multiple items can have the same expiration
# times, but there can only be one instance of any one key
# in the CacheMap.
self._data = {}
self._ttl = default_ttl
self._touch = touch_on_access
self._max_items = max_items
self._expire_interval = expire_interval
if max_items is not None:
self._recent = _BoundedCacheSet(int(min(recent_items, max_items)))
else:
self._recent = None
reactor.callLater(self._expire_interval, self._expire)
def __init__(self, max_items):
assert max_items > 1
self._max_items = max_items
self._data = IndexedMultiMap() # recent accesses.
