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Turn: [Jenkins+Ansible+Gitlab Automated Deployment three swordsmen] learning notes - Chapter 5 5-1~5-5 Freestyle Job practice Chapter V 5-1~5-5 Freestyle Job actual combat success 1, Introduction to the environment of three swordsmen (Jenkins, Ansible, Gitlab) 2, Three swordsman environment constru ...

CentOS 6.9. When executing yum makecache, 404 errors are reported as follows: http://mirrors.cloud.aliyuncs.com/epel/6/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found" The reason is that "CentOS 6 has entered EOL (Reaches End of Life) with the end of November 2020 , the official re ...

Basic introduction of hash table Hash table (also known as hash table) is a data structure that is accessed directly according to the key value. That is, to speed up the search by mapping it to a key in the table. This mapping function is called hash function, and the array storing records is called hash table. (the bottom layer of hash table ...

Analysis and imitation of nginx memory pool source code 1, nginx introduction Nginx is a high-performance HTTP and reverse proxy web server. It also provides IMAP/POP3/SMTP services. It is famous for its stability, rich function set, sample configuration files and consumption of low system resources. Its characteristics are less memory an ...

Wechat ordering system 02 - buyer side goods and categories 1, Buyer category 1. Create entity class First, create the entity class. Here, first create the entity class of the buyer category table. @Data @Entity @DynamicUpdate public class ProductCategory { //Category id @Id @GeneratedValue(strategy = GenerationType.IDENTITY) ...

If there are no special circumstances, some feature APIs will be updated every year. This year's release is the 12th edition, which is what we call "ES12". Let's take a look at which APIs have been updated. Numeric Separators As we all know, our "Number" is long like this: 123456. However, when the amount is large, it wi ...

Author: Tangyuan Personal blog: javalover.cc preface Hello, I'm tangyuan. Today I bring you the default method in Java 8. I hope it can help you. Thank you The article is purely original, and personal summary will inevitably make mistakes. If so, please reply in the comment area or send a private message backstage. Thank you brief int ...

The jdk used is 1.7. You need to understand the reflection mechanism and the concept of generic bytecode registration! 1, Agent mode Proxy mode is a commonly used java design mode. Its feature is that the proxy class has the same interface with the delegate class. The proxy class is mainly responsible for preprocessing messages for the delega ...

8, Mathematics 204. Count prime Count the number of all prime numbers less than non negative integer n. Example: input: 10 output: 4 explain: There are four prime numbers less than 10, They are two, 3, 5, 7 . Idea: this problem needs to consider optimization in order to make the algorithm efficient. Using the eratoseni sieve method ...

1, Introduction to Django 1.1 introduction to Django Django, released in 2005, is the most famous and mature network framework in the python world. A web site originally used to produce online news. Django is an open source web application framework written in python (the source code is open source and complies with BSD copyright). MVC fra ...