Spring Boot

Getting Started with LangChain4j and Spring Boot

This Spring Boot tutorial aims at Langchain4j Chat APIs to get started with and run a few examples to give you a high-level understanding.

Spring Boot JpaRepository Example

Learn to Spring Data JPA module and work with JpaRepository interface for performing the CRUD operations in underlying databases in a Spring Boot application.

Spring Boot REST API for Excel File Download

Learn to write Spring Boot RESTs that help in downloading the Excel files (.xlsx) either stored in the server or generating and then sending it.

Spring Boot MVC Exception Views: Custom Error Pages

Learn to create generic and custom error pages for specific HTTP error codes in a Spring Boot application with configuration examples.

Spring Boot @Import and @ImportResource Examples

By leveraging Spring @Import and @ImportResource annotations, we can create more modular, maintainable, and flexible Spring Boot applications.

Different Ways to Load Property Files in Spring Boot

Spring Boot provides various ways to load property files such as default application.properties, spring profiles, custom property files, environment variables, and system properties.

Creating and Building a Spring Boot Project with Gradle

Learn to create a Spring Boot project with Gradle from scratch, configure the build script, create a Spring Boot application class, and run the application.

Spring Boot Transaction-Aware Caching Example

In Spring tutorial explores transaction-aware caching using transactionAware property and TransactionAwareCacheManagerProxy class with example.

Run a Spring Boot and Postgres Application on Podman

This guide explores the step-by-step process of containerization and running a Spring Boot application with PostgreSQL database using Podman.

Spring Boot REST API Timeout (with Examples)

Learn to handle REST API timeouts on the server side using Spring boot MVC async, Resilience4j, @Transactional, RestTemplate and WebClient with examples.

Spring vs. Spring Boot: What’s Difference?

This Spring vs. Spring Boot tutorial lists the differences between Spring framework and Spring Boot based on general characteristics and features.

Spring Boot OpenFeign Client Tutorial

Learn about Feign Client and how to use it in a Spring Boot application. Also, learn the commonly used default Feign configurations and customizing them.

Displaying Images with Thymeleaf and Spring Boot

Learn to display images from different sources (e.g., resources directory or database) using the Thymeleaf view templates in a Spring Boot application.

Spring Boot Hello World Example: Beginners Guide

Spring Boot is an open-source framework that simplifies the development of stand-alone, production-grade Spring-based MVC applications and microservices.

Creating a Jasper Report with Spring Boot

Learn to create Jasper reports in a Spring boot application, step by step, by configuring JasperReport library, loading the report templates, fill the data into reports and finally export the filled reports into a variety of formats.

Spring Boot and Kafka Streams Example

Learn to create a Kafka Streams application using Spring Boot. Also, learn about Topology and Processor and unit test the topology design.

Spring Boot File Upload REST API Example

Learn to write a REST API in Spring Boot that can handle single file and multiple file uploads. Also learn to validate the file sizes and types.

Spring Boot REST API Example – Step-by-Step Guide

Learn to build REST APIs in a Spring boot application with request validation, error handling, testing and API documentation with examples.

Spring Boot and Vaadin CRUD Example

Vaadin is a Java framework that simplifies front-end development by providing a rich set of reusable UI components and layouts. In this Spring Boot and Vaadin tutorial, we will explore the process of developing a basic CRUD application. 1. Goals Our goal is to construct a user interface that includes …

Apache Kafka using Spring Boot

Learn to configure Spring boot application and Apache Kafka Producer, and Consumer, handle Kafka errors and retry in case of failures.

Spring Boot Security Role-based Authorization

Learn the core concepts of configuring role-based authorization in Spring Security 6 and implementing authorization in a Spring Boot application.

Spring Boot REST API for Long-Running Tasks

Learn to design and implement a Spring Boot REST API that accepts long-running tasks and publishes the execution progress to a Kafka topic.

Spring Boot @KafkaListener and @KafkaHandler Example

Spring @KafkaListener and @KafkaHandler annotations provide convenient ways to consume and handle messages from Kafka topics.

Using Spring KafkaAdmin to Create New Topics Programmatically

Learn to configure KafkaAdmin with custom properties, and create new topics in the Kafka cluster using AdminClient.createTopics() with example.

Using KafkaTemplate with Spring Boot

Learn the basics of KafkaTemplate, configure KafkaTemplate with custom properties, and configure producer and consumer factories with examples.

OpenAI ChatGPT APIs using Spring Boot

Learn to call OpenAI ChatGPT APIs in Spring Boot RestTemplate or WebClient with an example. Also, log the requests and responses for debugging.

Stream Processing with Redis and Spring Boot Data

Learn to use Redis Streams in a Spring Boot application to implement simple, in-memory and real-time stream processing of messages/events.

Spring Boot Docker Compose Example

Learn to use Spring boot docker compose module, customize the compose file and container lifecycle with an example.

Spring Boot Data Redis with Lettuce and Jedis

Learn to connect to Redis from Spring Boot, customize default config and perform cache operations using StringRedisTemplate / RedisTemplate.

Redis Pub/Sub with Spring Boot Data

Learn to use Redis Pub/Sub with Spring Boot Data, and configure the message publishers and subscribers (listners) for a given channel topic.

DynamoDB with Spring Cloud AWS DynamoDbTemplate

Learn to use integrate DynamoDB using Spring-cloud-aws module and its DynamoDbTemplate and DynamoDbEnhancedClient beans with examples.

Deploy a Spring Boot App to AWS Elastic Beanstalk

Step by step, we will learn to deploy a Spring Boot application to AWS Elastic Beanstalk which uses RDS for persisting the records in the database.

Deploy a Dockerized Spring Boot App to AWS

By combining the portability and flexibility of Docker containers with AWS’s reliable and scalable infrastructure, we can take our Spring Boot applications to new heights. In this comprehensive guide, we’ll show exactly how to deploy a Dockerized Spring Boot app to AWS ECS from start to finish. 1. Introduction to …

Spring Boot @RateLimiter and @Bulkhead with Resilience4j 2

Learn to configure bulkhead and rate limiting using Resilience4j 2 in a Spring boot 3 application, and testing with Apache JMeter.

Login/Logout using Spring Boot Security 3 and JWT Auth

Learn to implement authentication with a user login and logout functionality using Vue.js and Spring Boot Security using JWT tokens.

Spring Boot REST – Handling XML Request and Response

Spring boot, by default, configures Jackson for parsing objects to JSON. We can use Jackson’s XML module or JAXB to configure the XML support.

Load Initial Data with SQL Scripts in Spring Boot

Learn to execute SQL scripts to load data (e.g. import.sql, schema.sql or data.sql) during startup of a Spring boot application or tests.

Getting Started with Spring Boot Data and MongoDB

Learn to integrate Spring Boot with MongoDB using the Spring Data MongoDB API and work with database using MongoTemplate and MongoRepository.

DynamoDB with Spring Boot

Learn to access DynamoDB from a Spring Boot app and perform CRUD, batch and transaction operations using DynamoDBMapper or JPA Repository.

Vue.js CRUD Application with Spring Boot

Learn to create an application from scratch using REST APIs created with Spring boot and the user interface created with Vue.js. We will build a simple employee management application with Create, Read, Update, and Delete (CRUD) functionality. 1. Application Overview In the application, the home screen will present a list …

Deploying a Spring Boot App to Kubernetes (Minikube)

Deploying a Spring Boot application to Kubernetes can seem daunting at first, but with the right tools and knowledge, it can be a straightforward process. In this post, we will walk through the steps needed to deploy a dockerized Spring Boot application to Kubernetes (Minikube). 1. Prerequisites Before we begin, …

Configure Multiple DataSources in Spring Boot

In this post, we will learn how to configure and manage multiple datasources using properties configuration and defining custom beans using Java annotations in Spring Boot. Note that this requirement differs from having separate datasource in test, dev and prod environments. Here, we are using multiple datasources in the same …

Why and How to use SpringBootServletInitializer?

Learn the internal working of SpringBootServletInitializer and how to use it to deploy a Spring Boot application to an external server.

Spring Boot – Separate DataSource for Test, Dev and Prod

Learn to configure and use different DataSource in different environments (test, development, production etc.) using the Spring profile specific properties files, as well as Java configuration in a Spring boot application. 1. Introduction A production grade application is deployed and tested in different environments before finally released to the end-user. …

Spring Boot

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