👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-15

spring-boot pagination spring-data-jpa postgresql performance Java

I recently switched to I'm trying to implement I've been struggling with this for a few days now and could really use some help..... I'm building a Spring Boot REST API that needs to handle pagination for a large set of user data, and I'm running into issues with efficiency and performance. I am using Spring Data JPA and PostgreSQL, and when I implement pagination, I notice that the database query performance degrades significantly as the page number increases, especially with very large datasets. My current implementation looks like this: ```java @GetMapping("/users") public ResponseEntity<Page<User>> getUsers(@RequestParam(defaultValue = "0") int page, @RequestParam(defaultValue = "10") int size) { Page<User> users = userRepository.findAll(PageRequest.of(page, size)); return ResponseEntity.ok(users); } ``` I also tried using `@Query` annotations to optimize my queries, but I still see long response times when accessing pages beyond page 5. This is the custom query I attempted: ```java @Query(value = "SELECT * FROM users ORDER BY id OFFSET :offset LIMIT :limit", nativeQuery = true) List<User> findUsersWithPagination(@Param("offset") int offset, @Param("limit") int limit); ``` However, the results are still not satisfactory, and I receive messages indicating a significant load on the database server. Additionally, I've enabled query logging and noticed that the generated SQL for pagination does not utilize indexes effectively, leading to full table scans. I’m also unsure if I should implement some caching mechanism or switch to a different pagination approach, like keyset pagination. Does anyone have suggestions on how to optimize pagination in this scenario or best practices for handling large datasets in a Spring Boot REST API? Any insights on caching strategies or alternative pagination methods would also be appreciated. Any ideas what could be causing this? Could someone point me to the right documentation? I've been using Java for about a year now. Has anyone dealt with something similar? Any advice would be much appreciated. For context: I'm using Java on Windows 11. Is there a better approach?