Spring Full-Stack Practical Cases

Sep 21, 2026 · Backend Development

Why Your API Slows Down: 8 Critical Bottlenecks in Spring Boot Performance

This article analyzes eight common API performance bottlenecks in Spring Boot applications, including N+1 queries, improper entity returns, missing indexes, JOIN FETCH pagination issues, in-memory filtering, deep pagination, long transactions, and caching strategies, with code examples and optimization techniques for each.