The Database Tells You What Is. An Audit Trail Tells You What Happened
Something is wrong with a customer's account. You open the database and run: SELECT * FROM customer_account WHERE id = 12345 ; The row looks perfect…
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Silent Saves: How JPA Persists Your Changes Without You Asking
One of our junior devs wrote an API that was supposed to be “read-only” and act as an internal data funnel — pull some records, transform them, pass…
JPA/Hibernate Entity Lifecycle: 4 States Explained Simply! 💡
Hi everyone! 👋 I am a Java developer documenting my journey toward mastering full-stack software development. In this post, I am breaking down a cor…
Java Digest #39: 91 CVE в Spring, Value Objects в Java и AI-native разработка
У Spring за один день вышел 91 CVE — больше, чем за весь прошлый год, — и нашел их в основном AI-сканер. Oracle впервые за двадцать лет выпустила па…
Skill of the Week: Spring Data JPA. Никто не знает JPA, даже AI
Знание и умение разрабатывать на Spring Data JPA — это обязательный навык для разработчика, если он хочет заниматься разработкой приложений на Sprin…
Understanding Hibernate ddl-auto in Spring Boot: When to Use create, update, validate, and none
Choosing the wrong spring.jpa.hibernate.ddl-auto setting can lead to unexpected schema changes or even data loss. In this guide, you'll learn what e…
What Is the N+1 Problem in Hibernate/JPA? How to resolve it? Interview Q&A
The N+1 problem happens when: Hibernate executes 1 query to fetch parent records + N additional queries to fetch child records This causes: too many…