QQ 聊天用的是socket 那么来回传数据，经过数据库吗？
闭关修行中......
QQ sends messages directly to the server via udp and then the server sends them to others.
Cloud records will be stored. In the past, the chat records should be stored directly locally. Now, they should be stored on the network, so the data on the QQ server must be stored.
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QQ sends messages directly to the server via udp and then the server sends them to others.
Cloud records will be stored. In the past, the chat records should be stored directly locally. Now, they should be stored on the network, so the data on the QQ server must be stored.