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Some additonal description, deleted wrong pumlid
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Thomas 2017-01-29 11:16:45 +01:00 committed by GitHub
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@ -3,7 +3,7 @@ layout: pattern
title: Thread Local Storage
folder: tls
permalink: /patterns/tls/
pumlid: 5Sd13OGm30NHLg00uZlTc62HeCI9x6-s_ONJF6dMghd5AM5jAS3qdSZubwwA4aUuM1uAKQGyEg6CpZxSwUQ7jrEyNhfD1iJKwNql2Cr9aB-ci9vczFO7
pumlid:
categories: Concurrency
tags:
- Java
@ -11,12 +11,13 @@ tags:
---
## Intent
Securing variables global to a thread, i.e. class variables of the Runnable object,
against being spoiled by other threads using the same instance of the Runnable object
Securing variables global to a thread, i.e. class variables if a Callable object,
against being spoiled by other threads using the same instance of the Callable object
![alt text](./etc/tls.png "Thread Local Storage")
## Applicability
Use the Thread Local Storage in any of the following situations
* when you use class variables in your Runnable Object that are not read-only
* when you use class variables in your Callable Object that are not read-only and you use the same Callable instance in more than one thread running in parallel
* when you use static variables in your Callable Object that are not read-only and more than one instances of the Callable may run in parallel threads.