2020年最好用起伏来表达。回顾这一年，新冠肺炎的冲击带来了消费需求和市场形态的变化，几乎席卷了所有行业，网上属性强的家具行业也不例外。在
Can anyone think of a good way to allow the server to notify the client based upon server processing? For example, consider the following events:
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