Master Hibernate and JPA with Spring Boot in 100 Steps - Step 85 - Performance Tuning - Eager Versus Lazy Fetch

The video tutorial discusses the performance implications of eager versus lazy fetch strategies in Hibernate. It explains that the choice between eager and lazy fetch depends on specific use cases, such as whether entity details are needed every time. The tutorial also covers how to configure these strategies, noting that many-to-one and one-to-one mappings are eager by default, while others are lazy. The video concludes with a brief introduction to the N + 1 problem, which will be explored further in the next video.

What is the main factor to consider when choosing between eager and lazy fetch in Hibernate?

• The programming language used

• The speed of the network connection

• The size of the database

• The specific use case requirements

When should you opt for eager fetching in a one-to-one relationship?

• When you always need the related entity

• When you sometimes need the related entity

• When you never need the related entity

• When you rarely need the related entity

What is the recommended default fetch strategy for most use cases?

• Eager fetch

• Lazy fetch

• Deferred fetch

• Immediate fetch

Which type of mapping is eager by default in Hibernate?

• One-to-many

• Many-to-many

• Self-referential

• Many-to-one

What is the default fetch type for 'many-to-many' relationships in Hibernate?

• Eager

• Immediate

• Lazy

• On-demand