Spring Web applications and RESTful services contain controllers responsible to process requests and send back responses. At times you might need to perform certain operations on client requests before it reaches the controller. Similarly, you might need to perform operations on responses sent back by controllers to clients. You can achieve this using filters in […]Continue reading
While developing a Spring Boot Application, sometimes we need to run a piece of code at startup. This code can be anything. You might want to log certain information or run some cron jobs or send some notifications. Or you might even want to start the application with seed data in the database. In this […]Continue reading
Distributed Microservices Systems typically comprise a large number of smaller services. These services communicate with each other to perform operations. In order to communicate, one service needs the address of the other service to call. However, service addresses are dynamic in modern microservices systems. For example, if a service is running on one IP and […]Continue reading
We use scheduling to schedule jobs in a Spring Boot application. For instance, you can implement scheduling to perform some task at a specific time, or repeat after a fixed interval. In this post, you’ll learn how to use the Spring @Scheduled annotation to configure and schedule tasks. Spring Boot @Scheduled Annotation Example Let’s say […]Continue reading
Apache Kafka is an open-source Message Bus that solves the problem of how microservices communicate with each other. Spring for Apache Kafka, also known as spring-kafka. It is a project that applies core Spring concepts to Kafka-based messaging solutions. Spring-kafka provides templates as high-level abstractions to send and consume messages asynchronously. In this post, you […]Continue reading
Spring Retry provides the ability to automatically re-invoke a failed operation. This is helpful when errors may be transient in nature. For example, a momentary network glitch, network outage, server down, or deadlock. You can configure the spring-retry module using annotations. You can define the retry limits, fallback methods, etc. In this post, you will […]Continue reading
The Spring Boot CLI (Command Line Interface) is a command-line tool that you can use to run and test Spring Boot Applications from a Terminal. The CLI is one of the fastest ways to develop a Spring-based application. How does Spring Boot CLI work? It uses Spring Boot Starter and Spring Boot AutoConfigure components to […]Continue reading
Internationalization or I18N is a process that makes your application adaptable to different languages and regions without engineering changes on the source code. You can display messages, currencies, date, time etc. according to the specific region or language, likewise you can say internationalization is a readiness of localization. Maven dependency You will only require the […]Continue reading
A Deque is a linear collection that supports element insertion and removal at both ends. The name deque is short for “double ended queue” and is usually pronounced “deck”. The Deque interface defines methods to access the elements at both ends of the deque. Methods are provided to insert, remove, and examine the element. Each […]Continue reading
In Java, you use the enumeration type to represent a list of predefined constants. But, what if you want to implement a Set interface with the enumeration type, you have got EnumSet in Java to do so. Enum constants are unique and have predefined length, as you can not define a new enum constant at […]Continue reading
