php uses the ordered set zset of redis to implement delay queue
Delay queue is a message queue with delay function. Compared with ordinary queue, it can consume messages at a specified time.
Application scenario of delay queue:
1. New users sign up, and send e-mails or on-site letters in 10 minutes.
2. After the user places an order, the order will be automatically voided if the payment is not made withi ...
Posted by DJP1986 on Sat, 21 Mar 2020 10:15:02 -0700
Download Zabbix Graph chart through PowerShell
Generally, the chart of Zabbix Graph page is mostly used to write reports, forming a more intuitive report.However, if there are a large number of charts to view, it will lead to screenshots for each item of each host, which is inefficient. This time, I specially wrote a script to complete this work.
In order to understand, I set up a zabbix t ...
Posted by Karlos2394 on Fri, 20 Mar 2020 02:24:48 -0700
Share some best practices of PHP coding
For starters, it may be difficult to understand why some practices are safer.
However, some of the following tips may be beyond the scope of PHP.
Always use braces
Let's look at the following code:
if (isset($condition) && true === $condition)
echo 'this is a success';
//It's true, but look at the code below
if (isset($condi ...
Posted by Boerboel649 on Fri, 20 Mar 2020 01:47:57 -0700
Animation + Ajax+touch module + zepto plug-in in zepto
Animation in zepto
There is no animation module in zepto, so fx.js and fx_methods.js need to be introduced separately
https://github.com/madrobby/zepto
Show and hide toggle elements
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>zepto</title>
<meta name="viewport" ...
Posted by Donnamabob on Wed, 18 Mar 2020 09:40:42 -0700
About PHP + jQuery UI drag floating layer to sort and save to database instance
The PHP + jQuery UI implements the drag floating layer sorting layout and saves the dragged floating layer position sorting results to the database instance.
First, jQuery library and jquery-ui.min.js are introduced, then a drag loading image is placed, and multiple module drag layers are read from the database. Modules and orderlist are used ...
Posted by carlmcdade on Wed, 18 Mar 2020 07:30:21 -0700
Nginx Security Access Configuration
Website System Security Configuration (Nginx) prevents websites from being malicious GJ s.Websites such as DDos, CC, etc.They all work the same way, sending large amounts of request data to the server.
Nginx Active Defense MethodThere are two modules in Nginx that control the "number" and "speed" of accessing user connecti ...
Posted by cdjaco on Tue, 17 Mar 2020 12:28:51 -0700
workerman's method to realize simple bullet curtain
Barrage, a popular Chinese term, refers to the comment subtitles that pop up when watching vi d eos on the Internet. Let's take a look at how to use workerman to implement a simple barrage.
How to become an architect from a coder must see the knowledge point: Catalog Daquan (continuous update) 50W annual salary challenge!
php code:
<?php ...
Posted by Boerboel649 on Tue, 17 Mar 2020 10:38:32 -0700
Default values in dogma
How to set the default value in doctrine2?
#1 building
<?php
/**
* @Entity
*/
class myEntity {
/**
* @var string
*
* @ORM\Column(name="myColumn", type="integer", options={"default" : 0})
*/
private $myColumn;
...
}
Note that this uses SQL DEFAULT, which is not supported for some fields, such as BLOB ...
Posted by rami103 on Tue, 17 Mar 2020 07:45:49 -0700
How to dynamically add elements to listView in Android
Who can explain or suggest a tutorial for creating listView in Android?
This is my request:
I should be able to add new elements dynamically by pressing the button.
It should be simple enough to understand (for example, there may not be any performance improvements or convertview)
I know there are many questions about this topi ...
Posted by jackson4me90 on Sun, 15 Mar 2020 03:03:38 -0700
Installing php extension in docker
Some extensions of php
Using the keyword docker PHP ext install directly in the Dockerfile file
RUN docker-php-ext-install -j$(nproc) iconv \
&& docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
&& docker-php-ext-install -j$(nproc) ...
Posted by Tristan Wells on Sat, 14 Mar 2020 23:41:05 -0700