Last Updated on January 14, 2021 by jt List is one of the most commonly used collections in Java. Some List implementations are LinkedList, ArrayList, and Stack. In this post, I will take you through some of the common operations performed on List. Overview In Java, List is an interface that provides the facility to maintain […]Continue reading
Last Updated on February 3, 2021 by jt Using API Gateways is a common design pattern with microservice architectures. API Gateways allow you to abstract the underlying implementation of the microservices. Microservices based systems typically have a large number of independent services. One challenge in such systems is how external clients interact with the services. […]Continue reading
Last Updated on October 21, 2024 by jt Java 14 introduces a new feature called Records. In Java, Record is a special type of Java class. It is intended to hold pure immutable data in it. The syntax of a record is concise and short as compared to a normal class In this post, I will […]Continue reading
Last Updated on January 14, 2021 by jt A Spring Boot RESTful service is typically divided into three layers: Repository, Service, and Controller. This layering helps to segregate the RESTful application responsibilities and enabling loose coupling between the objects. When you develop a layered RESTful application, you will also need to test the different layers. […]Continue reading
Last Updated on October 21, 2024 by jt In my previous post Caching in Spring RESTful Service: Part 1, I discussed how to implement caching for queries on products. Now, consider a scenario where you need to delete or update a product. The cache should be aware of these operations. Or else, the cache will […]Continue reading
Last Updated on January 5, 2021 by jt RabbitMQ is a common messaging broker which allows applications to connect and communicate. It’s common for services in microservices-based systems to communicate asynchronously through messaging. In order to create such a message-based system, you need a message broker, aka messaging server. A message broker can support several […]Continue reading
Last Updated on January 5, 2021 by jt In Java 8 lambda expressions were added to make Java code more concise and readable. Lambda expressions are similar to methods. However, unlike other methods, lambda expressions do not need a name. You can implement a lambda expression right in the body of a method. If you […]Continue reading
Last Updated on January 14, 2021 by jt Why Use Caching? When data stored in some database is requested simultaneously from a large user base, the system can get overwhelmed. This happens because for each request the application has to retrieve the data from the database. As the number of simultaneous requests keeps on increasing, […]Continue reading
Last Updated on January 5, 2021 by jt Spring Boot REST APIs have different types of clients accessing from different locations. At times, these APIs need to perform tasks to generate and share sensitive data. Now all clients should not get access to such data, but only a privileged set of clients should. In such […]Continue reading
Last Updated on February 3, 2021 by jt Java SE 12 introduces switch expressions, which like all expressions evaluate to a single value, that you can use as statements. Java 12, brings improvement to the switch statement with new capabilities. Some of the key capabilities are arrow case labels, multiple case statements, and return values. […]Continue reading
