class SplitLRUCache(AbstractCache.AbstractCache):
def __init__(self, cache_size, min_obj_size, max_obj_size):
"""
cache_size in bytes.
"""
self._max_size = cache_size
self.stats = CacheStats.CacheStats("LRU", cache_size)
self.daily_stats = CacheStats.DailyCacheStats(cache_size)
ts = int(time.time())
get_size = int(0.333333 * cache_size)
put_size = int(0.666666 * cache_size)
self.get_lru = LRUCache(get_size, 0, 0)
self.put_fifo = LRUCache(put_size, 0, 0)
def get_cache_stats_total(self):
return self.stats.to_dict()
def get_cache_stats_day(self):
# self.daily_stats.cache_used = self._used_size
s = self.daily_stats.to_dict()
self.daily_stats.reset()
return s
def get_num_cached_objects(self):
return self.get_lru.get_num_cached_objects() + self.put_fifo.get_num_cached_objects()
def is_cached(self, obj_id):
return self.get_lru.is_cached(obj_id) or self.put_fifo.is_cached(obj_id)
def is_remembered(self, obj_id):
return self.is_cached(obj_id)
def get_free_cache_bytes(self):
return self.get_lru.get_free_cache_bytes() + self.put_fifo.get_free_cache_bytes()
def update_obj_size(self, obj_id, size, delta):
if self.get_lru.is_cached(obj_id):
self.get_lru.update_obj_size(obj_id, size, delta)
if self.put_fifo.is_cached(obj_id):
self.put_fifo.update_obj_size(obj_id, size, delta)
def remove_cached(self, obj_id):
if self.get_lru.is_cached(obj_id):
self.stats.deleted_objects += 1
self.stats.cached_objects_current -= 1
self.daily_stats.deleted_objects += 1
return self.get_lru.remove_cached(obj_id)
if self.put_fifo.is_cached(obj_id):
self.stats.deleted_objects += 1
self.stats.cached_objects_current -= 1
self.daily_stats.deleted_objects += 1
return self.put_fifo.remove_cached(obj_id)
return None
def cache_object(self, obj_id, size, xtime, next_line=None, force=True, is_new=False):
if is_new:
self.put_fifo.cache_object(obj_id, size, xtime, next_line, force)
else:
self.put_fifo.cache_object(obj_id, size, xtime, next_line, force)
def get_cached(self, obj_id, xtime, next_line=None):
if self.get_lru.is_cached(obj_id) or self.put_fifo.is_cached(obj_id):
self.stats.cache_hits += 1
self.daily_stats.cache_hits += 1
return True
self.stats.cache_misses += 1
self.daily_stats.cache_misses += 1
return False
def rename(self, from_obj_id, to_obj_id):
self.get_lru.rename(from_obj_id, to_obj_id)
self.put_fifo.rename(from_obj_id, to_obj_id)
def check_sanity(self):
return True
def dump_cache(self, reason):
print ("dump")
