def order_by_star(cls, start=0, limit=20):
ids = cache.lrange(STAR_KEY, start, start + limit)
if not ids:
ids = [
c.id for c in cls.objects.order_by('-like_count')[:TOTAL_SIZE]
] # noqa
cache.delete(STAR_KEY)
cache.rpush(STAR_KEY, *ids)
ids = ids[start:start + limit]
return cls.get_multi(ids)
def search(subject_id, type):
key = SEARCH_KEY.format(id=subject_id, type=type)
if not subject_id:
return []
comment_ids = cache.lrange(key, 0, -1)
if comment_ids:
return Comment.get_multi(comment_ids)
songs = []
if type == 'artist':
artist = Artist.get(id=subject_id)
songs.extend(Song.objects(artist=artist))
else:
songs.extend(Song.get(id=subject_id))
comments = sum([list(Comment.objects(song=song)) for song in songs], [])
comment_ids = [comment.id for comment in comments]
if comment_ids:
cache.rpush(key, *comment_ids)
return comments
def cache_by_key(cls, key, ids):
"""给内部用"""
cache.delete(key)
cache.rpush(key, *ids)
cache.expire(key, TIMEOUT)