2015-08-13 23:54:40 +02:00
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---
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layout: pattern
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title: Poison Pill
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folder: poison-pill
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2015-08-15 18:03:05 +02:00
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permalink: /patterns/poison-pill/
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2016-08-30 15:10:34 +02:00
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pumlid: JSZ14SCm20NHLf82BExfXiYCJGOX3NpYzkDZRllsgTwjTgcmnmciV145N-rGdFMkbEZJ8OxMvo2rkXWSzE4lRxka7huj1YGyQN3UGMjgpdkh6Gdwlrl5QAk6_G00
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2015-08-20 21:40:07 +02:00
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categories: Other
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2015-12-28 15:52:44 +02:00
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tags:
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- Java
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- Difficulty-Intermediate
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2016-07-21 09:27:48 +03:00
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- Reactive
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2015-08-13 23:54:40 +02:00
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---
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2016-01-03 21:14:30 +01:00
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## Intent
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Poison Pill is known predefined data item that allows to provide
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2015-08-13 23:54:40 +02:00
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graceful shutdown for separate distributed consumption process.
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2016-01-03 21:14:30 +01:00
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## Applicability
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Use the Poison Pill idiom when
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2015-08-13 23:54:40 +02:00
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* need to send signal from one thread/process to another to terminate
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2016-01-03 21:14:30 +01:00
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## Real world examples
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2015-08-13 23:54:40 +02:00
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2015-08-15 18:03:05 +02:00
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* [akka.actor.PoisonPill](http://doc.akka.io/docs/akka/2.1.4/java/untyped-actors.html)
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