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java-design-patterns/lazy-loading
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Zhang WH 67edeb806d
Java 11 support for #984 #987 (l) (#1190) 
* Java 11 support: lazy-loading pattern

* Java 11 support: layers pattern

* Java 11 support: leader-election/lazy-loading patterns
2020-03-22 20:02:45 +02:00
..
etc
#1113 Add uml-reverse-mapper plugin
2019-12-07 18:03:49 +02:00
src
Java 11 support for #984 #987 (l) (#1190)
2020-03-22 20:02:45 +02:00
pom.xml
Issue 989 batch-2 (#1108)
2019-12-18 22:04:08 +02:00
README.md
https://github.com/iluwatar/java-design-patterns-web/issues/8 Update pattern categories and tags
2019-12-13 21:09:28 +02:00

README.md

layout, title, folder, permalink, categories, tags
layout title folder permalink categories tags
pattern Lazy Loading lazy-loading /patterns/lazy-loading/ 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.

Class diagram

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