Hibernate - Eager & Lazy

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If you are not mentioning anything FetchType.LAZY is a default.

Eager:

  • It will load all the relationship tables.

Lazy:
  • It will load only particular object instance.
  • It will initialized when its explicitly called by getter methods  (to fetch more tables)
Eg:
When loading login page, no need of user details tables, just we need user table to check the username & password. As we know to get all the relations is very expensive. 


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