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example     In the example, the DemoService instance is obtained through the Spring context. In the previous article Dubbo Consumer reference service We have learned about the process of referencing services, creating invoker s and creating proxy objects. The DemoService instance here is the created proxy object, and then the sa ...

As we know, there are usually multiple instances on the Dubbo server, and the Dubbo consumer has built-in policies for load balancing scheduling. Let's take a general look. The overall architecture of routing and load balancing officially given is as follows: Before we start, let's talk about a few concepts in Dubbo: Cluster is commonly known ...

Concept and definition of FST The full name of FST serialization is Fast Serialization Tool, which is an alternative implementation of Java serialization. Since the two serious shortcomings of Java serialization mentioned above have been greatly improved in FST, the characteristics of FST are as follows: The serialization provided by JDK i ...

Last week, I encountered a compatibility problem about upgrading dubbo 2.6 to 2.7, which almost caused an online failure. Here is a record and a reminder. Problem playback The provider of an interface (dubbo 2.6.6) configures the version number of the interface in this way <dubbo:provider version="1.0.0"/> The reference configuration of ...

Dubbo SPI dubbo adopts SPI idea instead of using the SPI mechanism of jdk, but a set of SPI mechanism implemented by itself. Disadvantages of jdk SPI The JDK standard SPI will load all implementations of instantiated extension points at one time. If N implementation classes are added to the file under META-INF/service, all implementations wi ...

Connecting zookeeper related bug s After learning about ssm recently, you need to further study dubbo and its required registration center zookeeper. However, a bug was encountered when writing an introductory case, which is as follows: Caused by: java.lang.IllegalStateException: zookeeper not connected at org.apache.dubbo.remoting.zookeepe ...

springboot-dubbo First, create a simple maven project It stores entity classes and service classes Entity class to inherit Serializable Entity classes can introduce lombok and rely on an @ Data annotation <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> < ...

We have learned how to use the Spring Security framework. In this chapter, we need to apply the Spring Security framework to the background system for permission control. Its essence is authentication and authorization. To carry out authentication and authorization, we need to support the seven tables i ...

catalog How Dubbo's XML is used and how it integrates with Spring ServiceClassPostProcessor Implemented BeanDefinitionRegistryPostProcessor class How the bean instance of ServiceClassPostProcessor is injected into the container in advance. The definition of DubboNamespaceHandler, the parsing class ...

Order module issues 1. Split the order module horizontally and vertically. There will be more and more data in the order table in the e-commerce platform. In order to better business expansion, the database table needs to be split. Horizontal split is divided into clothing order table, home applianc ...