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java-design-patterns/lazy-loading
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Alexander Ivanov 4904d7eea0 #1021: Fix checkstyle warnings by changing the license header template (#1027) 
* Add custom license header style in order to comply with Google's Checkstyle format

* Update license headers to comply with Google's Checkstyle format
2019-10-22 08:15:35 +03:00
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#190 Remove urm plugin
2017-11-28 20:55:52 +02:00
src
#1021: Fix checkstyle warnings by changing the license header template (#1027)
2019-10-22 08:15:35 +03:00
pom.xml
Update license headers
2019-10-12 20:05:54 +03:00
README.md
#190 Remove pumlids from readmes
2017-11-28 21:28:53 +02:00

README.md

layout, title, folder, permalink, categories, tags
layout title folder permalink categories tags
pattern Lazy Loading lazy-loading /patterns/lazy-loading/ Other
Java
Difficulty-Beginner
Idiom
Performance

Intent

Lazy loading is a design pattern commonly used to defer initialization of an object until the point at which it is needed. It can contribute to efficiency in the program's operation if properly and appropriately used.

alt text

Applicability

Use the Lazy Loading idiom when

  • eager loading is expensive or the object to be loaded might not be needed at all

Real world examples

  • JPA annotations @OneToOne, @OneToMany, @ManyToOne, @ManyToMany and fetch = FetchType.LAZY

Credits