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实战Nginx与PHP(FastCGI)的安装、配置与优化 - 更多技术 - 清泛网 - 专注...

...在Linux下是socket,(这个socket可以是文件socket,也可以是ip socket)。为了调用CGI程序,还需要一个FastCGI的wrapper(wrapper可以理解为用于启动另一个程序的程序),这个wrapper绑定在某个固定socket上,如端口或者文件socket。当Nginx将C...
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PHP Session Fixation / Hijacking

...ed so it's not 100% reliable, but it's better than not. Include the user's IP address from $_SERVER['REMOTE_ADDR'] in the session. Basically, when the session starts, store it in something like $_SESSION['remote_ip']. This may be problematic from some ISPs that use multiple IP addresses for their ...
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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

...位置在文件系统的buffer cache和磁盘调度器之间,通过tcp/ip发给另外一台主机到对方的tcp/ip最终发送给对方的drbd,再由对方的drbd存储在本地对应磁盘 上,类似于一个网络RAID-1功能。在高可用(HA)中使用DRBD功能,可以代替使用一个...
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TCP vs UDP on video stream

...tivity; therefore TCP is more appropriate for replaying a video-on-demand. IP multicast significantly reduces video bandwidth requirements for large audiences; TCP prevents the use of IP multicast, but UDP is well-suited for IP multicast. Live video is normally a constant-bandwidth stream recorded o...
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How do I fix the error 'Named Pipes Provider, error 40 - Could not open a connection to' SQL Server'

...g with SERVER/INSTANCENAME when everything is configured correctly, named pipes, user access rights... and suddenly it struck me, it's not a slash, it's a backslash (\). The horror, the shame... share | ...
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MySQL CONCAT returns NULL if any field contain NULL

...ONCAT(COALESCE(`affiliate_name`,''),'-',COALESCE(`model`,''),'-',COALESCE(`ip`,''),'-',COALESCE(`os_type`,''),'-',COALESCE(`os_version`,'')) AS device_name FROM devices share | improve this answer ...
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Permission denied (publickey) when SSH Access to Amazon EC2 instance [closed]

...out which username you should use is often lacking from the AMI Image description. But you can find some in AWS EC2 documentation, bullet point 4. : http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AccessingInstancesLinux.html Use the ssh command to connect to the instance. You'll specify the...
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How to detect the physical connected state of a network cable/connector?

...nected state of an RJ45 connector to its socket. Preferably using BASH scripting only. 14 Answers ...
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how to detect search engine bots with php?

...s user agent with fake name and name it like "Googlebot"? I think checking ip range is more trustworthy! – Mojtaba Rezaeian Jul 1 '15 at 6:39  |  ...
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Difference between TCP and UDP?

... TCP is a connection oriented stream over an IP network. It guarantees that all sent packets will reach the destination in the correct order. This imply the use of acknowledgement packets sent back to the sender, and automatic retransmission, causing additional delays a...