官方定性：「嚴重踐踏」而非僅「破壞」
drop-oldest: Drops the oldest buffered data to make room. Useful for live feeds where stale data loses value.。关于这个话题，51吃瓜提供了深入分析
Create your own custom use-case，更多细节参见safew官方版本下载
Thought to be made from a cattle femur, this decorated Anglo-Saxon spindle whorl, used to provide weight while spinning yarn, was unearthed from farmland near Bishopstone, Buckinghamshire.