Introduction As a Java developer, a common task you’ll encounter is converting between Java objects and JSON. The Jackson library is a powerful and widely used tool for this purpose. Whether you’re building RESTful APIs, microservices, or simply handling JSON data in your application, Jackson’s ObjectMapper class makes it easy to serialize and deserialize Java […]Continue reading
Spring AI is the latest project from the Spring Team. Working with Large Language Models (LLMs) has traditionally been the domain of languages such as Python and Javascript. Spring AI is changing this and is enabling integration with generative AI with Java and Spring. In this post, we will take an initial look at using […]Continue reading
JSON Logging in Spring Boot simplifies setup, especially for applications in distributed environments like Kubernetes. Consolidated logging requires searchable logs, often formatted in JSON. Logstash is a popular choice. A basic Logback configuration supports JSON logging, aiding development with profile flexibility. Testing can be done by generating log messages easily.
With techniques such as continuous delivery becoming more mainstream, automated database migrations are a baseline capability for many software teams. Flyway is a tool that anyone with basic knowledge of SQL can use to set up and maintain database schemas. Database migration with Flyway is gaining high traction in the industry primarily due to its […]Continue reading
Spring Boot Microservices requires authentication of users, and one way is through JSON Web Token (JWT). JWT is an open standard (RFC 7519) that defines a compact mechanism for securely transmitting information between parties. In this post, I will explain how to implement JWT authentication in Spring Microservices. JWT Token Overview JWT is of relatively […]Continue reading
Hikari Connection Pool commonly referred to as HikariCP is a very fast light weight Java connection pool. A connection pool is a cache of database connections. A Connection Pool maintains connections that can be reused when future requests to the database are required. In this post, I will explain Hikari Configuration for Spring Boot 2 […]Continue reading
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
