main.py 文件源码

def thumbnail(key,filename):
    if request.if_modified_since:
        return "HTTP_304_NOT_MODIFIED", 304
    memcache_key = 'thumbnail_{}'.format(key)
    data = memcache.get(memcache_key)
    if data is None:
        data = get_thumbnail(key)
        memcache.add(memcache_key, data, 86400 * 30)
    return data