Reverse proxy and load balancing in Apache 2.4

The content of the article is from the official document: http://httpd.apache.org/docs/2.4/howto/reverse_proxy.html Like nginx, Apache httpd provides reverse proxy and load balance. The following modules need to be enabled in the Apache httpd configuration: LoadModule proxy_module modules/mod_proxy.so LoadModule proxy_balancer_module modules/mo ...

Added by vund0 on Sat, 13 Jun 2020 11:05:30 +0300

SQL Server advanced query and T-SQL programming and transaction DQL+DML+DDL+DCL to realize warehouse inventory management system (example code display)

SQL Server advanced query and T-SQL programming to realize warehouse inventory management system SQL Server advanced query and T-SQL programming SQL Server advanced query and T-SQL programming to realize warehouse inventory management system 1. Language and environment 2. Functional requirements 3 ...

Added by bleh on Sat, 13 Jun 2020 09:21:58 +0300

It's multithreaded, so beginners can understand it

What is thread When it comes to threads, we should first understand what a process is. You should be familiar with this picture. The programs we see running separately are independent processes, and the processes are independent of each other. The 360 browser and Baidu cloud disk in the above figure are all independent processes. So what are th ...

Added by davidlenehan on Fri, 12 Jun 2020 09:03:54 +0300

Analysis and interpretation of the most easy to understand HashMap source code

The article has been included in Github.com/niumoo/JavaNotes , and Java programmers need to master the core knowledge. Welcome to Star and advice. Welcome to my official account , articles are updated weekly. As one of the most commonly used collection classes, HashMap needs to be understood in a simple way. This article will go deep into the ...

Added by mediabob on Thu, 11 Jun 2020 06:09:09 +0300

As long as you log a lot, locate a BUG shuttle

The complete code covered in this article: GITEE Or visit: https://gitee.com/topanda/spring-boot-security-quickly-start/tree/jpanda-spring-boot-security-api/src/main/java/cn/jpanda/demo/manager/configuration/log It is hard to avoid bugs when you write too much code. As a programmer who has been walking all year, it is not a rare thing to talk ...

Added by deejay1111 on Wed, 10 Jun 2020 06:50:17 +0300

C ා basic part - entrustment

preface In this chapter, I mainly use this series of C basic chapters to sort out the past study notes, summarize and understand more thoroughly. In. Net development, we often encounter and use delegation. If you can master and use it flexibly, you will be able to easily in programming. Then for many developers who have not been exposed to C fo ...

Added by Slippy on Sun, 07 Jun 2020 12:04:04 +0300

Responsibility chain model of behavior model

1 General Chain of responsibility pattern is a common behavior pattern. It encapsulates the processor into a processing chain, so that the request can be delivered on the chain. The processor on the chain decides whether to process the request or not. 2 responsibility chain mode A typical usage scenario of responsibility chain mode is when an e ...

Added by Nymphetamine on Sat, 06 Jun 2020 13:17:26 +0300

Talk about puma's DefaultTaskExecutor

order This paper focuses on puma's DefaultTaskExecutor TaskExecutor puma/puma/src/main/java/com/dianping/puma/taskexecutor/TaskExecutor.java public interface TaskExecutor extends LifeCycle { boolean isStop(); boolean isMerging(); void stopUntil(long timestamp); void cancelStopUntil(); void setContext(PumaContext context ...

Added by tsg on Wed, 03 Jun 2020 19:14:37 +0300

Inner class and static inner class in Java

Static inner class in Java: add the static modifier before the defined inner class. At this time, the inner class is the static inner class. Through an example to understand the characteristics of static inner classes. public class Outer { //Define an instance variable and a static variable private int a; private static int b; ...

Added by danlayton00 on Mon, 01 Jun 2020 17:15:53 +0300

Mouse and keyboard operation events

Mouse events Mouse events are included in the ActionChains class. When importing, you only need to: from selenium.webdriver.common.action_chains import ActionChains Import the class to: Common methods are: context_click() -- right click double_click() -- double click drag_ and_ Drop - drag move_to_element() -- mouse over an element cl ...

Added by snipesh0tz on Mon, 01 Jun 2020 04:12:15 +0300