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This article is excerpted from the Flyweight Pattern of "design patterns should be learned in this way" 1 story background Because a programmer changed a method parameter in the production environment and changed the int type to Integer type, because money was involved, the company suffered heavy losses and the programmer was dism ...

home pagespecial columnjavaArticle details0High frequency interview question: a picture to thoroughly understand Spring circular dependencyJava general Published 10 minutes ago1 what is circular dependency?As shown in the figure below:BeanA class depends on BeanB class, and BeanB class depends on BeanA class. This dependency forms a closed loop ...

Overview of this article Based on IUnknown, we can develop external interfaces of services or functions. The essence of interface implementation is the conduction of function address and function call. Therefore, IUnknown is particularly important in the basic code of M-core and A-core system service development framework. A component publ ...

1 what is circular dependency? As shown in the figure below: BeanA class depends on BeanB class, and BeanB class depends on BeanA class. This dependency forms a closed loop, which we call circular dependency. Similarly, see the following figure: In the above figure, BeanA class depends on BeanB class, BeanB class depends on BeanC class, and B ...

1, javap command Brief javap is the jdk's own anti parsing tool. Its function is to inverse parse the code area (assembly instruction), local variable table, exception table, code line offset mapping table, constant pool and other information corresponding to the current class according to the class bytecode file. Of course, some of these info ...

1. Overview of public platform 1.1 overview of public platform The official account of official account is the platform for operators to provide information and services to WeChat users through the official account. The platform of public platform development is the foundation of providing services. After creating public numbers and obtai ...

1. Software operation and compilation 1.1 software related concepts 1.1.1 ABI ABI : Application Binary Interface Windows is incompatible with Linux ELF(Executable and Linkable Format)PE(Portable Executable) Library level virtualization: Linux: WINEWindows: Cygwin 1.1.2 API API is the Application Programming Interface. API can be implem ...

Interviewer's investigation point This question is still to investigate the basic knowledge at the JVM level. The interviewer believes that only with solid basic skills can we write code with high robustness and stability. Technical knowledge involved (x.equals(y)==true). This code looks very simple, but it actually involves some underlying ...

1. Comparison of Redis cluster schemes Sentinel mode Before redis 3.0, the cluster is usually implemented by using sentinel tool to monitor the status of the master node. If the master node is abnormal, it will make a master-slave switch. Taking a slave as the master, the sentinel configuration is slightly complex, and the perfo ...

replicaset controller analysis Introduction to replicaset controller Replicaset controller is one of many controllers in Kube controller manager component. It is the controller of replicaset resource object. It monitors replicaset and pod resources. When these two resources change, it will trigger the replicaset controller to tune the corresp ...