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在线服务的黑天鹅 - 资讯 - 清泛网 - 专注C/C++及内核技术

...利用周日休息一下,但是一醒来就收到消息说某服务有些问题。于是赶紧连线了一堆正在处理事件的工程师,等拿到初步的原因分析之后,已经4小时之后了。 “墨菲定律”,一位工程师说,“前几天觉得这个地方有些隐患,已...
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How to make the 'cut' command treat same sequental delimiters as one?

... for parsing files where the separator is not whitespace (for example /etc/passwd) and that have a fixed number of fields. Two separators in a row mean an empty field, and that goes for whitespace too. share | ...
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What does “zend_mm_heap corrupted” mean

...could also be a bad environment (lib version mismatch, wrong dependencies, etc.) – Fractalizer Jul 31 '18 at 5:34 2 ...
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How can I connect to a Tor hidden service using cURL in PHP?

...r installing Privoxy you need to add this line to the configuration file (/etc/privoxy/config). Note the space and '.' a the end of line. forward-socks4a / localhost:9050 . Then restart Privoxy. /etc/init.d/privoxy restart ...
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PDOException SQLSTATE[HY000] [2002] No such file or directory

...l.default_socket => /tmp/mysql.sock => /tmp/mysql.sock But, in my /etc/my.cnf the sock file is actually in /var/run/mysqld/mysqld.sock. So, I opened up my php.ini and set the value for pdo_mysql.default_socket: pdo_mysql.default_socket=/var/run/mysqld/mysqld.sock Then, I restarted apache...
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Secure hash and salt for PHP passwords

...rcing a password policy of X length with X many letters, numbers, symbols, etc, can actually reduce entropy by making the password scheme more predictable. I do agree. Randomess, as truly random as possible, is always the safest but least memorable solution. So far as I've been able to tell, making...
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How to use php serialize() and unserialize()

... what is the explanation of those a,i,s etc in a:3:{i:1;s:6:"elem 1";i:2;s:6:"elem 2";i:3;s:7:" elem 3";} ? And if u don't mind , an example of serializing the array(might not be relevant to the theme of this post ) to send it to js. – Istiaqu...
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动态追踪(Dynamic Tracing)技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...在非常短的时间内,回答一些很难的关于软件系统方面的问题,从而更快速地排查和解决问题。它兴起和繁荣的一个大背景是,我们正处在一个快速增长的互联网时代,作为工程师,面临着两大方面的挑战:一是规模,不管是用...
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Good PHP ORM Library?

...No configuration No database (it creates everything on the fly) No models etc. It even does all the locking and transactions for you and monitors performance in the background. (Heck! it even does garbage collection....) Best of all... you don't have to write a single... line of code... Jesus thi...
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How do I extract the contents of an rpm?

... the example below: $ rpm2cpio php-5.1.4-1.esp1.x86_64.rpm | cpio -idmv /etc/httpd/conf.d/php.conf ./etc/php.d ./etc/php.ini ./usr/bin/php ./usr/bin/php-cgi etc share | improve this an...