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Uber5岁了,一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术

...还采用了根据实际情况改变乘车价格的策略——高峰溢价功能。在北京的上下班高峰时段呼叫Uber,相同路程乘车的价格将比平时高出2.3倍左右。 “动态价格体系算法的本质在于平衡需求,需求大于供给时,算法自动提高价格,...
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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...DCAST|RTCF_MULTICAST)) return __udp4_lib_mcast_deliver(net, skb, uh, // 播和广播处理,所有满足条件的sk都能接收 saddr, daddr, udptable, proto); sk = __udp4_lib_lookup_skb(skb, uh->source, uh->dest, udptable); //在hash表中查找满足条件的sk if (sk) { int r...
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How can I troubleshoot my Perl CGI script?

... debugger; we can use the command line tool netcat (nc, saw that here: Perl如何remote debug?). So, first run the netcat listener in one terminal - where it will block and wait for connections on port 7234 (which will be our debug port): $ nc -l 7234 Then, we'd want perl to start in debug mode w...