org.mapstruct is a Java-based code generation library that simplifies the implementation of mappings between Java bean types, commonly used in the context of object-to-object mapping (O2O). It generates mapping code at compile time, reducing the need for handwritten mapping code and providing type-safe mappings. Here’s a brief overview of org.mapstruct and how to use it: […]
In Spring Boot, a profile is a way to segregate parts of your application configuration so that you can use different configurations for different environments, such as local, development (dev), staging, and production (prod). By setting up profiles, you can ensure that the appropriate beans, properties, and configurations are loaded based on the active environment. […]
A Servlet container (also known as a web container or application server) is a part of a web server or application server that provides the runtime environment and necessary infrastructure to manage and execute Servlets, JavaServer Pages (JSP), and other web components in Java web applications. It is responsible for handling web requests from clients […]
In Spring Boot, a global exception handler is a centralized way to manage exceptions across the whole application. It allows you to define a common response for various types of errors and exceptions that may occur during the execution of your application. The main approach is to use the @ControllerAdvice and @ExceptionHandler annotations to handle […]
In Spring Boot, multiple requests are typically handled in parallel by default, thanks to the underlying use of Servlets and thread pools in the Spring framework. Spring Boot applications are inherently multithreaded because they run on top of a web server like Tomcat, Jetty, or Undertow, which supports concurrent request processing. Here’s a breakdown of […]
Spring Boot Actuator offers a wide range of configurable options for monitoring and managing your application. You can customize various aspects of Actuator, including the endpoints it exposes, security, metrics collection, health indicators, and integration with monitoring systems. Key Areas of Configuration for Spring Boot Actuator 1. Endpoint Configuration Spring Boot Actuator exposes multiple endpoints […]
In Spring, it’s common to have multiple beans of the same type. When you do, you may encounter issues with @Autowired or dependency injection because Spring doesn’t know which bean to inject. Here are several ways to handle multiple beans of the same type in Spring: 1. Using @Qualifier You can use @Qualifier with @Autowired […]
Resilience4j is a lightweight, easy-to-use fault tolerance library for Java, designed specifically for microservices and distributed systems. It helps in implementing resilience patterns like Circuit Breaker, Rate Limiter, Retry, Bulkhead, and Time Limiter. It integrates well with Spring Boot, making it a popular choice for ensuring fault tolerance in Spring applications. Resilience4j is inspired by […]
The Saga Design Pattern is a common approach used in microservices architectures to manage distributed transactions. In a monolithic application, a single transaction can manage multiple database changes. However, in a microservices environment, each service manages its own data, making it challenging to maintain consistency across services. Overview of the Saga Design Pattern The Saga […]
In Spring Boot, creating a scheduler is a straightforward process thanks to the @Scheduled annotation. A scheduler is used to execute a task at a specific time or on a regular interval. Spring provides built-in support for scheduling tasks with the @Scheduled annotation, and it also allows you to define cron expressions for more complex […]