Spring Full-Stack Practical Cases

Dec 15, 2025 · Backend Development

5 Efficient Ways to Check Record Existence in Spring Boot 3

This article compares five practical techniques—custom findBy, Query‑by‑Example, existsBy, COUNT aggregation, and native CASE WHEN EXISTS SQL—to determine whether a database record exists in Spring Boot 3.5.0, providing code examples, generated SQL, performance notes, and recommendations for each approach.