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What are the disadvantages of using persistent connection in PDO
... (Apache for mod_php, the current FastCGI process if you're using FastCGI, etc), not at the PHP level, and PHP doesn't tell the parent process to let the connection die when the script terminates abnormally.
If the dead script locked tables, those tables will remain locked until the connection dies...
Apache Prefork vs Worker MPM
...te easily.
The setting for prefork, worker, or event is set in sudo nano /etc/httpd/conf.modules.d/00-mpm.conf (for CentOS 6.x/7.x/Apache 2.4).
# Select the MPM module which should be used by uncommenting exactly
# one of the following LoadModule lines:
# prefork MPM: Implements a non-threaded, p...
When and why I should use session_regenerate_id()?
...g some important inputs (changing passwords, credentials, forgot passwords etc.) which may compromise site security or privacy policy.
See also:
PHP Security Guide: Sessions
Session Fixation(Nice read)
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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
...ster用户的的UID和GID相同在两台节点上分别执行：
cat /etc/passwd | grep hacluster
结果相同即可
5.2配置heartbeat
在从节点上也作同样的操作
配置主节点的heartbeatHeartbeat的主要配置文件有ha.cf、haresources、authkeys，均在/etc/ha.d目录 ...
Can you explain the concept of streams?
... the compressed form on to another stream, or one which encrypts the data, etc. At the other end there'd be the reverse chain, decrypting, decompressing or whatever.
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How would you access Object properties from within an object method? [closed]
...uent objects;Pen.dispenseInkOnto(Surface) makes more sense to me than Pen.getColor().
Getters and setters also encourage users of the class to ask the object for some data, perform a calculation, and then set some other value in the object, better known as procedural programming. You'd be better se...
Apache and Node.js on the Same Server
...or file handling (saving, editing, renaming, downloading, uploading files, etc.), he wants to use apache. So, I must:
10 A...
.htaccess rewrite to redirect root URL to subdirectory
...infinite redirect, since /subfolder is redirected to /subfolder/subfolder, etc... the RewriteCond %{REQUEST_URI} !^/subfolder makes sure that if a URL is already redirected, it's not done again
– patrick
Aug 23 '18 at 19:04
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What is the best way to prevent session hijacking?
...to notify the user of why they're being challenged
// for login again, etc.
}
What this does is capture 'contextual' information about the user's session, pieces of information which should not change during the life of a single session. A user isn't going to be at a computer in the US and in ...
Using semicolon (;) vs plus (+) with exec in find
...ecute multiple commands (separately for each argument),
Example:
$ find /etc/rc* -exec echo Arg: {} ';'
Arg: /etc/rc.common
Arg: /etc/rc.common~previous
Arg: /etc/rc.local
Arg: /etc/rc.netboot
All following arguments to find are taken to be arguments to the command.
The string {} is repl...