java-design-patterns/half-sync-half-async
Hemant Bothra 7d0a5c0edb Issue 989 batch-2 (#1108)
* Adding support for maven assembly plugin to generate executable jar with all dependencies in built

* Merge branch 'master' into issue-989

# Conflicts:
#	abstract-document/pom.xml
#	pom.xml

* Adding maven assemly plugin for projects with name A

* Update in format as per checkstyle, i.e. Spcae in place of tab with size of 2

* batch set - 2 having all project with B and C

* issue-989 d-e-f

* fixing eip pom and adding g-h-i-l-m-n Skipping naked object as it seems it doesn't have main method, will consider this at end

* Adding for O and P projects Skipping Object-Mother as we don't have main method for same.
2019-12-18 22:04:08 +02:00
..
2019-12-07 18:03:49 +02:00
2019-12-18 22:04:08 +02:00

layout, title, folder, permalink, categories, tags
layout title folder permalink categories tags
pattern Half-Sync/Half-Async half-sync-half-async /patterns/half-sync-half-async/ Concurrency
Performance

Intent

The Half-Sync/Half-Async pattern decouples synchronous I/O from asynchronous I/O in a system to simplify concurrent programming effort without degrading execution efficiency.

Class diagram

Half-Sync/Half-Async class diagram

Applicability

Use Half-Sync/Half-Async pattern when

  • a system possesses following characteristics:
    • the system must perform tasks in response to external events that occur asynchronously, like hardware interrupts in OS
    • it is inefficient to dedicate separate thread of control to perform synchronous I/O for each external source of event
    • the higher level tasks in the system can be simplified significantly if I/O is performed synchronously.
  • one or more tasks in a system must run in a single thread of control, while other tasks may benefit from multi-threading.

Real world examples

Credits