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
What are Structured Outputs? Using Structured Outputs is an important aspect when interacting with LLMs programmatically. LLMs, by their nature, generate unstructured output. The unstructured output does not work well with programming languages which need structure to understand the data. Through prompting techniques, you can direct the LLM to create a structured output. The format […]Continue reading
A hidden feature of Spring AI is the support of String Templates, aka StringTemplates. StringTemplate is a lightweight Java template engine. It is simple, and easy to use. StringTemplate is a stable project, established in 2007 and now on its 4 major release. Here is an example from the homepage of the Stringtemplate website. On […]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
When you work in Enterprise Spring applications, you will often need to establish mappings between your entities. JPA one-to-many mapping is one such example. At the database level, one-to-many mapping means that one row in a table is mapped to multiple rows in another table. In this post, I’ll explain how to implement JPA one-to-many […]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
On December 16th, 2021, with the announcement from the Spring Team, the next major release is Spring Framework 6. The whole objective is to cover Spring’s baseline upgrade efforts, in particular requiring JDK 17+ and migrating to the Jakarta EE 9 APIs, So we should be Getting Ready for upgrading to Spring Framework 6. Important […]Continue reading
