Hibernate

In this tutorial, we’ll explore implementing a second-level cache in Hibernate using NCache. We’ll set up a Java application with Hibernate. Then we’ll configure NCache as the second-level cache. Finally, we’ll test the implementation to see how caching reduces the database load and improves performance. Basics Before we dive into the implementation, let’s understand the basics of Hibernate, NCache, and Hibernate second-level cache. Hibernate Hibernate is an open-source object-relational mapping (ORM) framework for Java applications. It simplifies the development of database interactions by…

This is another article in the series related to supporting the Postgres JSON functions in a project using the Hibernate framework with version 6. The topic for the article is modification operations on JSON records. As in the previous article, it is worth mentioning that Postgres might now have such comprehensive operations as other NoSQL databases like MongoDB for JSON modification (although, with the proper function constructions, it is possible to achieve the same effect). It still suits most projects that require JSON…

Last year, I wrote two articles about JPA Criteria and Querydsl (see Introduction and Metamodel articles). Since the end of last year,  there’s been a new major release of Spring Boot 3. This release is based on Spring Framework 6 with several significant changes and issues which we should consider when upgrading. The goal of this article is to highlight these changes when upgrading the sat-jpa project (SAT project). The technologies used here are: Spring Boot 3.0.2, Hibernate 6.1.6.Final Spring…

In Hibernate, there is the concept of single-row fetching. In order to get a single row in the respective database table, we will go for either get() or load(). get() get() always hits the database.  If the serializable id is found, then we will get the respective details. Example SwingBowlers swingBowlers = (SwingBowlers) openSession.get(SwingBowlers.class,1); Serializable id is 1 (jerSeyNo) –> Primary Key If the serializable id is not found, then we will get the result as null.load() load() always creates a proxy object.  If the serializable…

What Is JPA Hibernate? Hibernate is one of the most popular Object Relational Mapper (ORM) libraries for Java and Spring applications. It helps developers connect to and work with relational databases from Java applications without having to write SQL queries. The library implements the JPA (Java Persistence API) specification and provides several additional features that help develop persistence in applications faster and easier. Caching in JPA Hibernate One of the cool features supported by Hibernate is caching. Hibernate supports two…

Last year, I wrote the article, “Upgrade Guide To Spring Boot 3.0 for Spring Data JPA and Querydsl,” for the Spring Boot 3.0.x upgrade. Now, we have Spring Boot 3.2. Let’s see two issues you might deal with when upgrading to Spring Boot 3.2.2. The technologies used in the SAT project are: Spring Boot 3.2.2 and Spring Framework 6.1.3 Hibernate + JPA model generator 6.4.1. Final  Spring Data JPA 3.2.2 Querydsl 5.0.0. Changes All the changes in Spring Boot 3.2…

This is a continuation of the previous article where it was described how to add support for the Postgres JSON functions and use Hibernate 5. In this article, we will focus on how to use JSON operations in projects that use Hibernate framework with version 6.  Native Support Hibernate 6 already has some good support for query by JSON attributes as the below example presents. We have our normal entity class that has one JSON property: Java   import jakarta.persistence.Column;…

Postgres database supports a few JSON types and special operations for those types. In some cases, those operations might be a good alternative for document databases like MongoDB or other NoSQL databases. Of course, databases like MongoDB might have better replication processes, but this subject is outside of the scope of this article. In this article, we will focus on how to use JSON operations in projects that use Hibernate framework with version 5. Example Model Our model looks like the…

Hibernate Hibernate by itself does not have full-text search support. It has to rely on database engine support or third-party solutions. An extension called Hibernate Search integrates with Apache Lucene or Elasticsearch (there is also integration with OpenSearch). Postgres Postgres has had full-text search functionality since version 7.3. Although it can not compete with search engines like Elasticsearch or Lucene, it still provides a flexible and robust solution that might be enough to meet application users’ expectations—features like stemming, ranking,…