Programmer Group

EventLoop In introducing the initialization and start-up process of Bootstrap, we touched NioEventLoopGroup several times. To understand this class, we also need to understand netty's thread model. NioEventLoopGroup can be understood as a set of threads, each of which can handle io events generated by multiple channel s independently. Initializ ...

I wonder if you have ever thought about this. When Wechat's personal public number is becoming more and more popular and the media is becoming more and more popular, have you ever thought about applying for a Wechat public number of your own? In the circle of friends, more and more small partners are forwarding articles in their Wechat Public N ...

Threads are created in the thread pool. Thread pool can improve performance very well. When a program passes a task to the thread pool, the thread pool will start a thread to execute the task. After execution, the thread will not die, but will return to the thread pool to become idle again and wait for the next task to be executed. All four th ...

Write in front On Purpose This is an introduction to how to build an LNMP environment on cloud servers. Content is based on my recent study and practice, so some content will be repeated with other articles online, so the purpose of this article is to pass the knowledge of the predecessors, and try to summarize a set of effective methods ...

Catalog Learning Notes: CentOS 7 Learning Seventeenth: Linux Scheduled Tasks and Log Management 17.1 Planned Task-at-cron-Planned Task Usage Method 17.1.1 Utilization of at Planned Tasks 17.1.2 View and delete planned tasks to be performed by at 17.1.3 Use of Crontab Timing Tasks Introduction of 17.1 ...

PHP (hypertext preprocessor) can be used to build small websites. When users need to register and login, they need to match the background database to register and login. There are many traditional ways and steps. They need to connect the database first and insert sql statements. <?php header("Content-type: text/html; charset=utf-8"); $conn ...

class BenHang extends Card{ /*Constructors and Inheritance of Constructions*/ function __construct($cardno,$pwd, $name,$money){ parent::__construct($cardno,$pwd, $name,$money); } function take($money){ echo "Bank withdrawal{$money}No handling fee·····<br>"; } function zhuan($money){ ...

Linux system is CentOS 6.7 Start preparations Switch to Package Directory cd /usr/local/src Clean up installed packages rpm -e httpd rpm -e mysql rpm -e php yum -y remove httpd yum -y remove mysql yum -y remove php #Search apache packages rpm -qa http* #Mandatory unloading of apache packages rpm -e --nodeps File name queried #Check ...

1. JSTL tag library Core Label Library (Key Points of this Chapter) International Label Library (later) Database Labels (Basically Not Used) XML tags (not used at all) JSTL function (EL function, later) 1.1 < c: out > label The <c:out> tag is used to output a paragraph of text content to the "out" reference curren ...

1. PrefaceThe last article described how to compile and install MySQL. Although it can be installed by yum install or rpm, there is a feature of yum install and RPM installation. Some parameters are customized according to the needs of the public. If you need to specify your own specific parameters, this is difficult to do. Therefore, people wh ...