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Preface The last "homework" for you to log in and register believe that the small partners according to our demo have been completed, then this article we continue to talk about some of the main functions encountered in the actual combat, not to mention more, let's enter today's body link!!! scene Radio Button radio button is widely u ...

The difference between AtomicLong and Long Adder AtomicLong 1. AtomicLong uses the underlying CAS operations to provide concurrency.2. In the environment of low concurrency, the probability of thread collision is relatively small, and the number of spins is not much. However, in high concurrent environment, N threads spin simultaneously, which ...

This article is about source parsing for Srping's BeanFactory.getBean. If this is your first look, first look at XMLBeanFactory parsing: https://blog.csdn.net/qq_3025... To better understand Spring's registration principles, this blog is a step-by-step look at how spring implements getBean source code. Spring version is 5.X. The source code has ...

1 ActiveMQ ActiveMQ is a message middleware. There are many open source products of message middleware on the market, such as RocketMQ, RabbitMQ, Kafka and so on. To take a simple analogy, message middleware is a transit station, adding a transit station in the program, with such a storage site similar to express delivery, can greatly reduce th ...

Initial Exploration of IOC Annotation Development First, after spring 4, to use annotation form, you must introduce aop packages and a context constraint in the configuration file http://www.springframework.org/schema/context http://www.springf ...

Let's start with the effect map (see the explanation later if you are interested in it): 1. Display of login effect 2. Pay attention to effect demonstration 1. [Drawing rounded rectangle] Drawing begins with the onDraw method (I'll write the circle code, step by step). First, define an attribute in the view: private R ...

Python's interfaces for processing XML are grouped in the xml package. A delimited file has only two dimensions of data: rows and columns. If you want to exchange data structures between programs, you need a way to encode hierarchies, sequences, co ...

Microservices do not need to be an independent function or resource like ordinary services. It is perfectly correct to say in the definition that microservices need to match business capabilities. Unfortunately, it still means that if the granularity design of the capability model is wrong, then we have to pay a lot of price. If you read Fowle ...

1. Haoop Single Computer Distribution 1. Establish hadoop user and set hadoop user password [root@server1 ~]# ls hadoop-3.0.3.tar.gz jdk-8u181-linux-x64.tar.gz [root@server1 ~]# useradd hadoop [root@server1 ~]# id hadoop uid=1000(hadoop) gid=1000(ha ...

Note that it takes a long, long time to read this article. This article is about Spring IOC Source Parsing (Part I) In the sequel, the previous article introduced how to start Spring using XML, and then tracked the creation of Bean Factory containers, the parsing of configuration files, the registration of beans, and so on. 12. finishBeanFactor ...