We attempted to completely fill the GC flow cache by sending packets to the Baidu server with different source IP addresses and ports, while probing to see whether the entries that we previously added had now expired. Our attempt suggests that at least in some cases, the GC flow cache between our test system and the Baidu server supports up to around 16,000 entries for a single sending IP address.
我们试图通过向百度服务器发送不同源IP地址和端口的包（同时探测之前加入的实体是否过期了）来塞满巨炮的流缓存。我们的努力显示至少在一些情形下，巨炮在我们的测试系统和百度服务器之间的流缓存支持最高16000左右实体，这是对于一个单独IP地址而言。
Unlike the GFW, the GC appears to act probabilistically
不同于GFW，巨炮的行动是概率性的
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