Programmer Think

Since we have just released the first milestone of the Spring Data JPA project, I would like to give you a brief introduction to its functionality. As you may know, the Spring framework provides support for building a data access layer based on JPA. So what does Spring Data JPA add to this basic support? To answer this que ...

                    The project group uses distributed services and has dozens of applications online. RPC calls rely entirely on Dubbo. Usually the development has been built with other people's Dubbo environment. Recently, I have taken time to build a small Dubbo demo, a server and a client independently. One server ...

PHP Full Stack Learning Notes 13 php and ajax technology With the arrival of web2.0, Ajax has gradually become the mainstream, what is ajax, the development mode of ajax, the advantages, and the use of technology.(ajax overview, technology used by ajax, issues to be noted, application of Ajax technology in PHP) What is ajax ...

Although SpringCloud and Dubbo(x) are the main technologies in the popular RPC technology, some more traditional technologies cannot be avoided if interface calls are made.I happened to use WebService's technology the other day when making interface calls (Sections 8,9 are real development), which is exactly what I wrote here. 1. RPC-related ...

outline Introduction to AOPII. Actual Operations of Spring3. Common labels of AOPIV. Project Source Code and Reference Download5. Reference Articles     Introduction to AOP 1. What is AOP In the software industry, AOP stands for Aspect Oriented Programming, which means: AoP Through precompile A technique of unified ...

In the previous chapter, we have built the development environment of myeclipse, mybatis and mysql, and implemented a simple query of mybatis. Note that this approach uses SqlSession instances to directly execute the SQL statements mapped in the User.xml file: session.selectOne("com.yiibai.mybatis.models.UserMapper.getUser ...

I. Introduction Through dynamic SQL, we can compile complex SQL, but the previous examples are single-table queries. In actual development, of course, not all single-table queries. Many times we need to carry out related multi-table queries (some companies still try to use single-table queries for performance). The relationship between tables ...

overview 1. Cluster Planning 2. preparation 3. Modify the Hadoop configuration file 4. Copy content 5. Start the cluster 6. view jps 7. test 1. Cluster Planning HDFS HA Background There is a single point of failure (SPOF) in NameNode in HDFS cluster. For a cluster with only one NameNode, if an accident occurs on the NameNode ...

Source code based on logback 1.1.2 The logback.xml file is as follows <?xml version="1.0"?> <configuration scan="true" scanPeriod="30 seconds"> <property name="fileDir" value="/export/log/ingoreTest"/> <appender name="debugFile" class="ch.qos.logback.core.rolling.RollingFileAppender"> <file>${ ...

Application for Wechat Public Account; Official website 2. Developing documents; Website III. Application for Interface Test Number and Test Connection url: To be accessed by the external network, the local server can build ngrok. Of course, if you have money, you can buy one; ngrok runs differently every time. Instructi ...