Understanding BeanPostProcessor and BeanFactoryPostProcessor in Spring

Understanding HandlerInterceptor Order in Spring Boot When you register multiple HandlerInterceptors in a Spring Boot application, have you ever wondered which one runs first? Here’s how Spring decides the order: Unlike Filters (which use @Order), HandlerInterceptors run in the order they are registered inside your WebMvcConfigurer. #SpringBoot #Java #SoftwareEngineering #BackendDevelopment #SpringMVC #CleanArchitecture

⚙️ Bean Lifecycle in Spring Every Spring bean goes through stages like instantiation, dependency injection, initialization, and destruction. Developers can customize these steps using lifecycle annotations such as @PostConstruct and @PreDestroy. Spring automatically manages this entire lifecycle, ensuring optimal resource handling and clean object management. 🔁 #SpringBoot #SpringFramework #Java #SpringBeans #Lifecycle #BackendDevelopment

Spring Container & Component Scanning The Spring Container manages object creation, wiring, and bean lifecycle. It reads configuration metadata to build your application structure. Using @ComponentScan, Spring auto-detects beans in specified packages. Together, they enable clean, modular, and maintainable applications. #SpringFramework #Java #SoftwareEngineering #BackendDevelopment

Where does your technical debt really hide? Cyclomatic complexity, churn, coupling — Richard Gross demonstrates how to measure and visualize deep problems in large codebases objectively. Read now on JAVAPRO: https://lnkd.in/eENXrUwD #Java #DomainDrivenDesign #LegacyCode

🚀 Annotations and Reflection (Java) Annotations with a RUNTIME retention policy can be accessed at runtime using reflection. The `java.lang.reflect.AnnotatedElement` interface provides methods for retrieving annotations associated with classes, methods, and fields. This allows you to dynamically inspect and process annotations, enabling powerful features like dependency injection and configuration management. #Java #JavaDev #OOP #Backend #professional #career #development

These issues often lead to scenarios where software is more about managing complexity than solving problems. Read more 👉 https://lttr.ai/AkrIL #java #DDD

Bean Scopes & Object Management Spring supports multiple scopes like singleton, prototype, request, and session. Singleton creates one shared instance for the entire application. Prototype creates a new instance every time it’s requested. Choosing the right scope improves memory and performance. It helps control how objects live inside your application. #SpringFramework #Java #SoftwareEngineering #BackendDevelopment

🚀 Building a Thread-Safe Map from a List in Java Ever needed to convert a List into a ConcurrentHashMap for fast lookups and safe concurrent access? Here’s an approach using Java Streams and Collectors.toMap(). 🔹 Key Idea: Transform your list into a map where keys = unique IDs and values = actual objects (Function.identity() style). 🔹 Why it matters: ⚡ Thread-safe lookups for concurrent environments 💡 Declarative one-liner using Java Streams 🧩 Merge function prevents duplicate-key exceptions 🔒 Backed by ConcurrentHashMap for safe updates #Java #SpringBoot #BackendDevelopment #ConcurrentProgramming #CleanCode #JavaStreams #ThreadSafe #CodingBestPractices #SoftwareEngineering #Developers

Spring Profiles & Environment Spring Profiles allow environment-specific configurations like dev or prod. They load only the beans relevant to the active profile. The Environment interface helps access these active profiles. It also retrieves property values dynamically at runtime. Together they enable clean, flexible multi-environment setups. #SpringFramework #Java #SoftwareEngineering #BackendDevelopment