Programmer Group

0. Architecture diagram 1. Network and system settings 1.1 /etc/profile agent sudo vi /etc/profile Comment out the following agent configuration source /etc/profile 1.2 wget agent sudo vi /etc/wgetrc 1.3 clearing environment variables env | grep -i proxy unset HTTPS_PROXY unset HTTP_PROXY unset FTP_PROXY unset https_prox ...

Recently, I checked a spring data jpa problem. In fact, it can not be regarded as a framework level problem, but rather a configuration problem; Because spring data jpa has not been used before (more mybatis or self-developed orm components), it is expected to record the configuration of spring data jpa through this article. Starting from the ...

The great Java 18 is coming out soon, and we may not be familiar with the core Lambda usage of Java 8. This article shares several tips for operating Map in the development process on Stream technology. After reading this article, I believe you will have a new understanding of Stream. 1, Gracefully initialize a Map Before looking down, firs ...

From Chapter 5 of Linux Shell script introduction, a mess? No such thing! Parsing website data $ lynx -dump -nolist http://www.johntorres.net/BoxOfficefemaleList.html |grep -o "Rank-.*" | sed -e 's/ *Rank-\([0-9]*\) *\(.*\)/\1\t\2/' | sort -nk 1 > actresslist.txt 1 Keira Knightley 2 Natalie Portman 3 Monica Bellucci The website is ...

concept Do you understand the database index? Generally speaking, the underlying data structure There are two common mysql structures: Hash index, B+ Tree index and full text index. We use innoDB engine, The default is B + tree. Differences between the two structures: The bottom layer of hash index is hash tab ...

Here are some common interview questions, analysis of test sites, answers, etc. Basic concepts Some basic java knowledge, various basic concepts, etc. What are the access modifiers? difference? Modifier Current classSame packageSubclassOther packagespublic√√√√protected√√√×default√√××private√×××    Scan VX for Java data, front-end ...

preface 1, Experimental content 2, Experimental topology 3, Implementation steps   1. Dynamic routing RIP configuration   2. Divide different network segments   3. Configure single arm circuit for R1 and R4 respectively   4. ACL configuration   preface Experiment 1, Experiment 4, Experiment 5 and three ...

Before saving bricks When the router TTL saved the brick, many netizens reported that they saw the information and couldn't choose. They watched the Startup menu roll over again and again. I have uploaded detailed video tutorials to watermelon, today's headlines and BiliBili. It is estimated that these two websites can accept hundreds of mega ...

Recommended by Haowen: Author: Ricardo mjiang preface At the end of July this year, Google officially released the 1.0 stable version of Jetpack Compose, which shows that Google believes that Compose can be used in the production environment. I believe that the wide application of Compose is in the near future. Now should be a better time t ...

At the beginning of learning the development method of combining C + + and QT, some good tutorials will be moved to their own blog to facilitate future search and learning. This time, a detailed tutorial and code example of udp module are reproduced; UDP(User Datagram Protocol) is a lightweight, unreliable, datagram oriented and connectionless ...