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java-design-patterns/async-method-invocation
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Per Wramdemark 218ba44dbf Upgrade of maven plugins (#951) 
* Upgrade maven plugins

* Upgrade maven plugins

Some general code cleanup was necessary due to upgrade of PMD and checkstyle.

Also needed to add Junit 4 as a dependency due to Mockito.timout issue found here:
https://github.com/mockito/mockito/issues/152
2019-10-05 14:23:20 +03:00
..
etc
#190 Remove urm plugin
2017-11-28 20:55:52 +02:00
src
Migrate to JUnit5
2017-12-31 16:29:48 +09:00
pom.xml
Upgrade of maven plugins (#951)
2019-10-05 14:23:20 +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 Async Method Invocation async-method-invocation /patterns/async-method-invocation/ Concurrency
Java
Difficulty-Intermediate
Functional
Reactive

Intent

Asynchronous method invocation is pattern where the calling thread is not blocked while waiting results of tasks. The pattern provides parallel processing of multiple independent tasks and retrieving the results via callbacks or waiting until everything is done.

alt text

Applicability

Use async method invocation pattern when

  • you have multiple independent tasks that can run in parallel
  • you need to improve the performance of a group of sequential tasks
  • you have limited amount of processing capacity or long running tasks and the caller should not wait the tasks to be ready

Real world examples