modelcounter.py 文件源码

def get_count(name):
    """Retrieve the value for a given sharded counter.

    Args:
        name: The name of the counter.

    Returns:
        Integer; the cumulative count of all sharded counters for the given
            counter name.
    """
    total = memcache.get(name)
    if total is None:
        total = 0
        all_keys = GeneralCounterShardConfig.all_keys(name)
        for counter in ndb.get_multi(all_keys):
            if counter is not None:
                total += counter.count
        memcache.add(name, total, 60)
    return total