In the concurrency scenarios such as seckill and rush to buy, oversold may occur. There is no native concurrency solution in PHP language, so we need to use other methods to achieve concurrency control.
Common solutions listed are:
With queue, an extra process is set up to process the queue, and the concurrent requests are put into the queue. I ...
Posted on Thu, 21 May 2020 10:24:07 -0400 by jtmathome
I haven't written a blog for several days, because there are a lot of things in my life recently. Although I am learning every day, I haven't recorded the knowledge points in my blog, which is very bad
In the future, we must stick to blogging and record our growth
I hope I can find some like-minded frie ...
Posted on Tue, 19 May 2020 11:01:15 -0400 by tim_ver
At the beginning of 2010, influenced by foreign saas suppliers such as salesforce and zoho, more and more enterprises began to invest in CRM research and development. In order to find its own brand direction, Wukong team took openerp (odoo) as the benchmark, began to explore on the road of open source, and invested in it for nearly ten years.
Posted on Tue, 19 May 2020 05:37:34 -0400 by JNettles
1) Queue is a first in first out (FIFO) linear table. It only allows deletion at the front end of the table and insertion at the back end of the table. The end of the insertion is called the end of the queue, and the end of the deletion is called the head of the queue. That is to say, the team can only enter from the end of the team, ...
Posted on Tue, 19 May 2020 04:14:52 -0400 by mgmoses
First, take the -- enable FPM parameter with you at compile time:
[root@localhost local]# yum -y install libxml2 libxml2-devel gd gd-devel
[root@localhost local]# wget http://cn2.php.net/distributions/php-7.2.0.tar.gz
[root@localhost local]# tar -zxvf php-7.2.0.tar.gz
[root@localhost local]# cd php-7.2.0
[root@localhost php-7.2.0]# ./configu ...
Posted on Mon, 18 May 2020 10:06:10 -0400 by zako234
The article is summarized from the instructions on the official website: http://docs.pnp4nagios.org/pnp-0.6/tpl
In daily use, it is unavoidable to find that the default drawing does not meet our needs, so you can customize the template to achieve the desired drawing effect according to your needs.
1. Official description of custom templates
Posted on Sun, 17 May 2020 13:39:02 -0400 by mysql_query
In general, there is a search function in development projects. If it is a search function for the C end, it often tests the performance. For example, the commodity search in the general mall system or the website search of some resources.
Perhaps the previous approach is to do a fuzzy query by name or product description on the prod ...
Posted on Sun, 17 May 2020 02:26:17 -0400 by Dasndan
1. Deploy the separated LAMP to two servers, and php loads the xcache module
1) Install httpd, PHP, PHP MySQL on c2 server
[root@c2 ~]# yum install httpd php php-mysql -y
2) Installing the database mariadb server on the mariadb server
[root@mariadb ~]# yum install mariadb-server -y
3) Start service
[root@c2 ~]# systemctl start httpd
Posted on Sat, 16 May 2020 03:29:12 -0400 by BuzzStPoint
XSS Challenge Tour
There is no filtering
php key code:
echo "<h2 align=center>And not found".htmlspecialchars($str)."Relevant results.</h2>".'<center>
<input name=keyword value="'.$str.'">
str is a controllable variable, the ...
Posted on Fri, 15 May 2020 21:04:31 -0400 by alexislalas
php object oriented static method usage
What is a static method?
Not all variables and methods are called by creating objects. It can be called directly by adding static keywords to variables and methods.
The syntax format for calling a static member is:
Key:: static member
The keywords can be:
(1) self, used when static members are called insi ...
Posted on Fri, 15 May 2020 05:16:11 -0400 by idontkno