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Circular Dependency Resolution in Spring Understanding Circular Dependencies Circular dependencies occur when two or more beans depend on each other, creating a dependency cycle. Spring handles this through a three-level caching mechanism. Early AOP and Caching Mechanism The earlySingletonObjects cache (second-level) stores partially constructe ...

This article provides an overview of IActionFilter in ASP.NET Core Web API, focusing on its execution order, attribute usage, and registration methods. The environment used is VS2019 with ASP.NET Core 3.1. Execution Order of IActionFilter The filter is called after the controller's constructor is executed. The OnActionExecuting method of IAct ...

Inversion of Control Container Underlying Concepts IoC shifts object creation and wiring responsibilities from application code to the container. The container relies on three main techniques: XML parsing, the factory pattern, and Java reflection. At startup, metadata (XML or annotations) is read, bean definitions are parsed, and the container ...

Vue's source code implements dependency collection using the Observer pattern. It involves three main classes: Dep: Acts as the observable target. Every data property has a Dep instance containing a subs queue (short for subscribers) that holds all Watcher instances depending on the data. When data changes, dep.notify() is called to inform all ...

Spring’s Inversion of Control (IoC) mechanism shifts object instantiation, dependency resolution, and lifecycle management from application code to a centralized container. The architecture relies heavily on metadata parsing, Java reflection, and a series of lifecycle callbacks. Core Container Abstractions The framework exposes two primary inte ...

When working with Prism.WPF and dependency injection containers like Unity, developers commonly register the primary application shell within the CreateShell method override. This process establishes the initial IRegionManager instance associated with the main window. protected override Window CreateShell() { return Container.Resolve<Ma ...

Spring provides several annotations to declare components as managed beans with in the container. @Controller: Designates a class as a Spring MVC controller, typically used in conjunction with @RequestMapping. @Controller @RequestMapping("user") public class UserController { @GetMapping("get/{id}") public String get ...

MyBatis-Spring provides a powerful feature that eliminates the need for manual DAO implementation classes. Instead of creating concrete implementations, the framework can automatically convert mapper intefraces into Spring beans through MapperFactoryBean. When working with individual mapper interfaces, the traditional approach requires explicit ...

The Spring ecosystem provides comprehensive infrastructure for building Java applications. It primarily consists of: Spring Framwork - The core framework Spring Boot - Adds auto-configuration capabilities that initialize resources based on conventions during startup Spring MVC - Web framework for building RESTful applications Spring Cloud - Di ...

Web Request and Response Mechanisms In a Browser/Server (B/S) architecture, clients interact with backend applications via HTTP protocols. When a request reaches the embedded Tomcat server in a Spring Boot application, it is initially processed by the core DispatcherServlet. This front controller routes the incoming request to the appropriate h ...