Back-end knowledge collection (Updated continuously ~)

The framework

Spring Boot

Some SpringBoot uses notes

MyBatis

MyBatis-PLUS

An enhancement tool for MyBatis

Website: baomidou.com

SpringCloud

Shiro

Spring

Dubbo

The database

Redis

Redis ZSet data structure

MySQL

# date_format()time.'%Y-%m-%d %H:%i:%s');
date_format(from_unixtime(time/1000),'%Y-%m-%d %H:%i:%s') # Select a random piece of dataselect * from users where userid > = ((select max(userid) from users)-(select min(userid) from users)) * rand() + (select min(userid) from users)  limit 1
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MyCat

The development tools

IDEA

  • shortcuts

    Case toggle: CTRL + Shift + UCopy the code

Drawing software

  • processon
  • draw.io

system

Linux

  • The command

    #Observe the file type file
file ~/.bashrc

#Search for script file nameswhich/typeWhich ifconfig which -a command # lists all directives that can be found in the PATH directory, not just the name of the first directive found
#Search whereis/locate/find for the file name
find /etc -newer /etc/passwd

#Capacity related DF/DU
du -sh ./*

#Common compression techniques
#Time gzip
gzip
bzip2
xz

#The awk commandExecutorfactory. handler - [vipusermkttouchjob_worker-1 :QXyq4kMAdZ] executorFactory. handler[79] : [op:handler, executorId:2, ruleId:145, uid:[email protected], handler:true, result:success] cat webapp.log | grep 'ExecutorFactory.handler[79]' | awk -F'uid:' '{print $2}' | awk -F',' '{print $1}'  | sort -uCopy the code

Distributed storage system

MINIO

CEPH

HDFS

JAVA related

Design patterns

Scheduled Task Scheduling

ELASTIC-JOB

<! -- 2.x version access case -->
<! -- Importing dependency packages -->
<! -- elastic-job -->
<dependency>
    <groupId>com.dangdang</groupId>
    <artifactId>elastic-job-lite-spring</artifactId>
    <version>2.1.5</version>
</dependency>

<! Configure jobs in Spring XML -->
<! -- Configure the Job registry -->
<reg:zookeeper id="regCenter" server-lists="${zookeeper.serverLists}" namespace="namespace"
               base-sleep-time-milliseconds="1000" max-sleep-time-milliseconds="3000" max-retries="3"/>

<! -- Configure jobs -->
<job:simple id="job1" class="jobClass"
            registry-center-ref="regCenter" cron="${job.cron}"
            sharding-total-count="${job.sharding-total-count}"
            sharding-item-parameters="${job.sharding-item-parameters}"
            overwrite="true"
            description="Scheduled task"/>

<! -- Parameter case -->
zookeeper.serverLists=x.x.x.x:2181,x.x.x.x:2182
job.cron=0 0 2 * * ?
job.sharding-total-count=1
job.sharding-item-parameters=0=A
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XXL-JOB

Handy utility classes

Hutool is a small and comprehensive JAVA tool class library

Arthas

Ali open source Java diagnostic tools

The Mock tools

  • Testable Mock tool makes unit testing simpler and testable
  • Mockito

Lambda

Option class, elegant determination of null

Streaming data processing

10 examples of lambda expressions

Maven

Gradle

Cache

Local cache Guava

Caffeine

Memcached

Redis

Big data

Flink(Flow Computing Framework)

Storm

Hadoop

network

Netty

SOFABolt

Other network

Java implements TCP communication

Java sockets implement simple HTTP services

TcpSocket heartbeat problem (including Mac system Settings)

Set the TCP keepalive for network interworking

The middleware

RabbitMQ

Go to rabbitmq. md

Kafka

ZooKeeper

Data structures and algorithms

Consistent hashing algorithm

BitMap

An interesting blog introduction

-The application labels the userCopy the code

Brush the topic notes

other

Git

DNS

CDN

Docker

The picture related

GIF picture principle and storage structure

GIF image generation

GIT

  • Introduction to git

  • Complete the game with Git

  • A Commit Message format

    -Blair: Feat. New feature fixes bugs in docs style. Refactoring (i.e. not new features, nor code changes that fix bugs) perf: performance (changes that improve code performance) test: adding or modifying tests build: changes that affect the build system or external dependencies (Maven, Gradle, NPM, etc.) CI: Changes to CI configuration files and scripts chore: Changes to non-src and test directories Revert: REVERT a commitCopy the code

Excel large file processing

Scripting language

Back-end technology atlas

The monitoring system

  • Promethes
  • Prometheus practice

Some personally written tool classes

Graduation design small program – health housekeeper

books

Java
Java Programming Ideas, the first Docke book, Effective Java, In-depth Understanding of the Java Virtual Machine, Java Performance Tuning Guide, From Paxos to Zookeeper, TCP/IP Details, HTTP details, Linux and Unix "Shell Programming Guide" "Birdman's Linux Private House Dish" "Python Programming from Beginning to Practice" "High-performance MySQL" "Hive Programming Guide" "Refactoring: Improving the design of existing code" "Head First Design Pattern" "Redis Design and Implementation" "MySQL must Know must Know" "Java Concurrent Programming practice" "Java Performance Authority Guide" "Programming Abas" "Introduction to Algorithms" "In-depth Understanding of computer Systems" "Graphic TCP/IP" "Domain Driven Design" "Code" "Art of Modifying Code" "Code Clean Way" "Programmer's Professional literacy"Copy the code