def get(self, key):
# get value from cache or from DB and update cache
if key in self.data:
node = self.data[key]
previous = node.previous
next = node.next
if previous != None:
previous.next = next
else:
self.head = next
if next != None:
next.previous = previous
else:
self.tail = previous
node.next = None
node.previous = None
self.appendNode(node)
return node.data
else:
dal = DAL()
value = dal.getValue(key)
if value != None:
self.insertInCache(key, value)
return value
else:
return "Error: key %s not found" % key
def put(self, key, value):
# Put key, value pair in cache and DB
self.insertInCache(key, value)
dal = DAL()
dal.update(key, value)
def warmUp(self):
# Get data from DB to populate cache
dal = DAL()
for key, value in dal.getKeyValues():
self.insertInCache(key, cPickle.loads(value))