Top 7 performance critical mistakes when working (..)
Jędrzej Biedrzycki 
JDD 2021 "Top 7 performance critical mistakes when working with SQL and JPA"
In the presentation I'll go through several performance mistakes I've encountered when designing and implementing a performance layer. I'll dive deep into the source of each mistake and ways to detect and avoid it. I'll use the following vendors in my examples: Hibernate in the JPA part, Postgres and Oracle in the SQL part. Basic knowledge of SQL and JPA is required.