Author: Editorial Team
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Java Records for @ConfigurationProperties
Java record classes can be used for @ConfigurationProperties to create immutable, type-safe configuration objects with minimal boilerplate code. You define a record with fields that correspond to your configuration properties, and annotate it with @ConfigurationProperties and a prefix. Spring Boot automatically binds properties from your application.properties or application.yml file to the record’s fields. You can…
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Spring @HttpExchange: The New and Improved Way to Build HTTP Clients
A new and powerful feature introduced in Spring Framework 6 and Spring Boot 3 is the declarative HTTP client, enabled by the @HttpExchange annotation. This modern approach simplifies the creation of HTTP clients by allowing you to define them as Java interfaces, completely removing the need for boilerplate code that was common with older clients…
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What is Spring’s BeanPostProcessor? And where it is useful?
Spring’s BeanPostProcessor is a powerful and fundamental extension point in the Spring Framework’s Inversion of Control (IoC) container. It allows you to hook into the bean lifecycle and perform custom logic on every bean instance created by the container, both before and after its initialization. Essentially, it’s an interface you can implement to intercept the…
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Why @Transactional Doesn’t Work for Internal Calls in Spring Beans
This is a classic and very important “gotcha” in Spring’s transaction management. If a method in a Spring bean calls another @Transactional method from within the same bean instance, the transaction annotation on the called method is ignored. Here’s why this happens and what you need to know: The Root Cause: Spring’s Proxy-Based AOP Spring’s…
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The Difference Between Propagation.REQUIRES_NEW and Propagation.NESTED in Spring
@Transactional(propagation = Propagation.REQUIRES_NEW) and Propagation.NESTED are two different transaction propagation behaviors in Spring, and they handle nested method calls with transactions in fundamentally different ways. Here’s a breakdown of the key differences: Propagation.REQUIRES_NEW Propagation.NESTED
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Understanding Core Deep Learning Architectures for Sequence Data
In the realm of deep learning, particularly for handling sequential data like text, audio, or time series, several fundamental architectures have emerged as dominant paradigms. This tutorial will demystify three key categories: Autoencoding Models (Encoder-Only), Autoregressive Models (Decoder-Only), and Sequence-to-Sequence Models (Encoder-Decoder). We’ll explore their core concepts, typical applications, and how they differ. 1. The…
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Understanding Generative Configuration Inference Parameters for LLMs
1. Introduction When interacting with large language models (LLMs) to generate text, you’re not just providing a prompt and getting a fixed output. Modern LLM APIs and frameworks offer a suite of parameters that allow you to control the generation process, influencing the creativity, randomness, coherence, and length of the generated text. These parameters are…
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Machine Learning Setup – Anaconda, Jupyter Notebook and Virtual Environment
1. Introduction In this session, we’ll walk through everything you need to set up your machine learning environment from scratch. This includes installing essential tools like Anaconda, working with Jupyter Notebook, and setting up a virtual environment to keep your project organized and dependency-free. 2.Tools Needed for Machine Learning Projects Before diving into coding, there…
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Adding a Data Layer and Unit Testing in Spring Boot with JPA, H2, and Mockito
Step 1: Add JPA and H2 Dependencies In your pom.xml, add the following dependencies for Spring Data JPA and the H2 in-memory database: Step 2: Configure Spring Boot Application Properties In src/main/resources/application.properties: Step 3: Create the JPA Entity Create Item.java in the appropriate package. This entity will map to the database table. Step 4: Create the Repository Interface Create…
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Writing Unit Tests for Spring Boot Controllers with a Mocked Business Service
Overview In this tutorial, we will take the next step in our Spring Boot testing journey. Previously, we tested a simple controller method that returned a hardcoded JSON response. Now, we’ll introduce a business service into the controller, and learn how to write unit tests that mock the service, allowing us to test the controller…