def get_comments_count(self, obj):
# return obj.comments_count
return RedisHelper.get_count(obj, 'comments_count')
def get_likes_count(self, obj):
# return obj.likes_count
return RedisHelper.get_count(obj, 'likes_count')
def get_likes_count(self, obj):
# select count(*) -> redis get
# N + 1 queries
# N 如果是 db queries -> 不可以接受
# N 如果是 redis/memcached queries -> 可以接受
return RedisHelper.get_count(obj, 'likes_count')
def get_comments_count(self, obj):
# Django定义的反查机制
return RedisHelper.get_count(obj, 'comments_count')
def get_comment_count(self, obj):
# get count from cached and denormalized counter
return RedisHelper.get_count(obj, 'comment_count')