def txn():
index = random.randint(0, CounterController.NUM_SHARDS - 1)
shard_name = name + str(index)
counter = GCounter.get_by_key_name(shard_name)
if counter is None:
counter = GCounter(key_name=shard_name, name=name)
counter.count += 1
counter.put()
def get_count(name):
"""Retrieve the value for a given sharded counter.
Parameters:
name - The name of the counter
"""
total = memcache.get(name)
if total is None:
total = 0
for counter in GCounter.all().filter('name = ', name):
total += counter.count
memcache.add(name, total, 60)
return total
