The best way to fetch multiple to-many relationships with Java by Vlad Mihalcea

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Fetching a multi-level hierarchy from a relational database is a classic performance bottleneck. If you do it wrong, you end up with the dreaded N+1 query problem or a Cartesian Product that brings your application to its knees.

​In this session, Java Champion Vlad Mihalcea dives deep into the most efficient strategies for retrieving complex data structures—specifically for scenarios where you need to store that result set in a cache like Redis.