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从网购到火车票，对比淘宝12306网为何如此烂？ - 大数据 & AI - 清泛网 - ...
...使用缓存(Tair);三应用拆分(HSF);四数据库拆分(TDDL);五异步通信(Notify);六非结构化数据存储(TFS,NOSQL);七监控、预警系统;八配置统一管理。(摘自：《淘宝网采用什么技术架构来实现网站高负载的》)
2. 12306网站被人诟病
淘...
廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...y local0
keepalive 2
warntime 10
deadtime 30
initdead 120
hopfudge 1
udpport 694
bcast eth1
ucast eth1 10.10.10.43 (从机配置 10.10.10.42)
auto_failback on
node share1
node share2
ping 172.16.20.254
watchdog /dev/watchdog
respawn root /usr/lib64/heartbeat/ipfail
apiauth ipfail g...
Sockets: Discover port availability using Java
...e checking the DatagramSocket as well to check if the port is avaliable in UDP and TCP.
Hope this helps.
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IPC performance: Named Pipe vs Socket
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Keep in mind that sockets does not necessarily mean IP (and TCP or UDP). You can also use UNIX sockets (PF_UNIX), which offer a noticeable performance improvement over connecting to 127.0.0.1
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how to find host name from IP with out login to the host
...ORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1460
;; QUESTION SECTION:
;34.34.51.72.in-addr.arpa. IN PTR
;; ANSWER SECTION:
34.34.51.72.in-addr.arpa. 42652 IN PTR sb.lwn.net.
;; Query time: 4 msec
;; SERVER: 192.168.178.1#53(192.168.178.1)
;; W...
程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...zon.com的公钥A, 然后我们就可以用这个公钥A和amazon.com进行通信，因为只有amazon.com 有私钥B, 所以只有amazon.com才能解开信息。
注意 权威机构的证书都是内置在操作系统里的。
由此可见，一个证书受不受信任，那就要看你要不...
fastest (low latency) method for Inter Process Communication between Java and C/C++
...99.99%,Max
IPC busy-spin, 89, 127, 168, 3326, 6501, 11555, 25131
UDP busy-spin, 4597, 5224, 5391, 5958, 8466, 10918, 18396
TCP busy-spin, 6244, 6784, 7475, 8697, 11070, 16791, 27265
TCP select-now, 8858, 9617, 9845, 12173, 13845, 19417, 26171
TCP block, 10696, 13103, 132...
BIO与NIO、AIO的区别(这个容易理解) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...动一个ServerSocket，然后在客户端启动Socket来对服务端进行通信，默认情况下服务端需要对每个请求建立一堆线程等待请求，而客户端发送请求后，先咨询服务端是否有线程相应，如果没有则会一直等待或者遭到拒绝请求，如果有...
How to find the port for MS SQL Server 2008?
...lves the instance name into the 51118 port. SQL Browser service listens on UDP port 1434 (standard & static), so I had to allow this also in server's firewall.
To extend a bit the actual answer: if someone else doesn't like dynamic ports and wants a static port for his SQL Server instance, shou...
Why am I getting “Cannot Connect to Server - A network-related or instance-specific error”?
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For me additionally I had to allow TCP 1433 and UDP 1434 in the Firewall
– MarkusEgle
Jul 2 '19 at 12:07
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