阻塞队列与普通的队列（LinkedList/ArrayList）相比，支持在向队列中添加元素时，队列的长度已满阻塞当前添加线程，直到队列未满或者等待超时；从队列中获取元素时，队列中元素为空，会将获取元素的线程阻塞，直到队列中存在元素或者等待超时。在JUC包中常用的阻塞队列包含ArrayBlockingQueue/Lin...

 mvninstall--settingsc:usersettings.xml#mvninstall-sc:usersettings.xmlmvncleanpackage--settingsF:Mavensettings.xml-Dmaven.test.skip=true#mvncleanpackage-sF...

jps[-lm]inmycase:[lenmom@Mi-1701bin]$jps-l5650sun.tools.jps.Jps20646org.apache.doris.broker.hdfs.BrokerBootstrap31814org.apache.flume.node.ApplicationandIwanato...

inmostcases,wewanttoexecutesqlscript indoris routinely.usingazkaban,toloaddata,etc.Andwewanttopassparameterstothesqlscriptfile.wecaneasilyhandlesuchsi...

1.commandshowtablestatuslike'{table-name}'; 2.samplemysql>useinventory;Databasechangedmysql>showtables;+---------------------+|Tables_in_inventory|+-...

1.setupdebugconfigurationmainClass:org.apache.kafka.connect.cli.ConnectDistributedVMOption:-Dkafka.logs.dir=/home/lenmom/workspace/software/kafka_2.11-2.1.0/bin...

Tobeginwith,let'stakealookathowkafkaconnectstart.1.1 startcommand#backgroundrunningmodecd/home/lenmom/workspace/software/confluent-community-5.1.0-2.11/&am...

WhenItrytocompileIgetanerroraboutamissingSNAPSHOTdependency.Theerrorlookssomethinglikethis:Failedtoexecutegoalonprojectkafka-connect-hdfs:Couldnotresolvedepende...

1.installkafkacatUbuntuapt-getinstallkafkacatCentOSinstalldeepenencyyuminstalllibrdkafka-develdownloadsourcefromgithubbuildsourceoncentos./configure<usual-co...

https://www.cnblogs.com/leeSmall/category/1093236.html  springmvchttps://www.cnblogs.com/leeSmall/category/1185488.html  springboothttps://w...

1.spring@component的作用a）@controller控制器（注入服务）b) @service服务（注入dao）c) @repositorydao（实现dao访问）d) @component（把普通pojo实例化到spring容器中，相当于配置文件中的<beanid="...

一、什么是AOPAOP（AspectOrientedProgramming），即面向切面编程，可以说是OOP（ObjectOrientedProgramming，面向对象编程）的补充和完善。OOP引入封装、继承、多态等概念来建立一种对象层次结构，用于模拟公共行为的一个集合。不过OOP允许开发者定义纵向的关系，但并不适合...

传统的Spring做法是使用.xml文件来对bean进行注入或者是配置aop、事物，这么做有两个缺点：1、如果所有的内容都配置在.xml文件中，那么.xml文件将会十分庞大；如果按需求分开.xml文件，那么.xml文件又会非常多。总之这将导致配置文件的可读性与可维护性变得很低。2、在开发中在.java文件和.xml文件...

https://www.cnblogs.com/ityouknow/category/914493.htmlhttps://www.cnblogs.com/ityouknow/category/994104.html...

list,string,tuple,dictionary之间的转换 类型StringListtupledictionaryString-list(str),str.split()tuple()-List‘’.join(list_name)-tuple()dict(list)tuple-...