When JPA is the wrong tool
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
recognize workloads that fit JPA poorly.
Planned topics
- JPA shines for object graphs with transactional writes (aggregates with identity and state changes).
- It struggles with reporting (joins, aggregates, window functions), bulk set operations, and complex hand-tuned SQL.
- Symptoms: native queries everywhere, DTO mapping hacks, awkward entity graphs for read screens.
- You can use more than one tool in the same service, with clear boundaries.
Draft outline details
Demonstration
a table of Shop use cases: place order (JPA), monthly report (SQL), nightly price update (set-based SQL), admin search (SQL).
Check your understanding
Which Shop use case fits JPA best?
Show answer
Placing an order: transactional writes on an aggregate.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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