advancedJPA & Hibernate459 of 469
200 orders on a page but 201 queries in the log. Name the problem and give fixes (including JOIN FETCH).
Tests whether you identify the N+1 problem precisely -- one query loads 200 orders, then a lazy association fires a separate query per order -- and fix it with JOIN FETCH, @EntityGraph, or batch fetching rather than just switching to EAGER everywhere, which creates its own over-fetching issue.
Ready to master this question?
Generate a complete walkthrough — background, the full answer in plain language, a working code example explained line by line, a real-world scenario, common mistakes, and how this same question gets asked in different ways.
Sign in to generate a response