def clear_mc(cls, target, amount):
tag_id = target.tag_id
tag_name = Tag.get(tag_id).name
for ident in (tag_id, tag_name):
total = incr_key(MC_KEY_GET_COUNT_BY_TAG % ident, amount)
pages = math.ceil(max(total, 1) / PER_PAGE)
for p in range(1, pages + 1):
rdb.delete(MC_KEY_GET_POSTS_BY_TAG % (ident, p))
def incr_key(stat_key, amount):
from corelib.db import rdb
from redis.exceptions import ResponseError
try:
total = rdb.incr(stat_key, amount)
except ResponseError:
rdb.delete(stat_key)
total = rdb.incr(stat_key, amount)
return total
def clear_mc(cls, target, amount):
action_type = cls.action_type
assert action_type
target_id = target.target_id
target_kind = target.target_kind
stat_key = MC_KEY_GET_COUNT_BY_TARGET % (action_type, target_id,
target_kind)
total = incr_key(stat_key, amount)
pages = math.ceil(max(total, 1) / PER_PAGE)
user_id = target.user_id
rdb.delete(MC_KEY_GET_BY_TARGET %
(action_type, user_id, target_id, target_kind))
for p in list(range(1, pages + 1)) + [None]:
rdb.delete(MC_KEY_GET_PAGE_BY_TARGET %
(action_type, target_id, target_kind, p))
# mc by user
stat_key = MC_KEY_GET_COUNT_BY_USER % (action_type, user_id,
target_kind)
total = incr_key(stat_key, amount)
pages = math.ceil(max(total, 1) / PER_PAGE)
for p in range(1, pages + 1):
rdb.delete(MC_KEY_GET_PAGINATE_BY_USER %
(action_type, user_id, target_kind, p))
def clear_mc(cls, target, amount):
""" 关注和取消都要清理缓存及更新相关对象 """
to_id = target.to_id
from_id = target.from_id
st = userFollowStats.get_or_create(to_id)
follower_count = st.follower_count or 0
st.follower_count = follower_count + amount
st.save() # 注意，放在sqlalchemy的清理钩子里，会报错
st = userFollowStats.get_or_create(from_id)
following_count = st.following_count or 0
st.following_count = following_count + amount
st.save()
rdb.delete(MC_KEY_GET_FOLLOW_ITEM % (from_id, to_id))
for user_id, total, mc_key in (
(to_id, follower_count, MC_KEY_GET_FOLLOWERS_PAGINATE),
(from_id, following_count, MC_KEY_GET_FOLLOWING_PAGINATE)):
pages = math.ceil((max(total, 0) or 1) / PER_PAGE)
for p in range(1, pages + 1):
rdb.delete(mc_key % (user_id, p))
def clear_mc(cls, id, kind):
rdb.delete(ITEM_MC_KEY.format(id, kind))
def update(self, **kwargs):
rdb.delete(MC_KEY_GET_BY_TITLE % self.title) # 注意，在更新前清除缓存
super().update(**kwargs)
def clear_mc(cls, target):
rdb.delete(MC_KEY_GET_BY_TITLE % target.title)
rdb.delete(MC_KEY_TAGS % target.id)