https://github.com/rkuhn/messagedeliveryguarantees

https://github.com/rkuhn/messagedeliveryguarantees

Last synced: about 2 months ago
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• Host: GitHub
• URL: https://github.com/rkuhn/messagedeliveryguarantees
• Owner: rkuhn
• Created: 2014-11-05T16:18:05.000Z (about 10 years ago)
• Default Branch: master
• Last Pushed: 2014-12-17T14:15:35.000Z (about 10 years ago)
• Last Synced: 2023-03-23T17:27:19.896Z (almost 2 years ago)
• Size: 148 KB
• Stars: 8
• Watchers: 2
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
MessageDeliveryGuarantees

=========================

This repository hosts several different branches showing different implementations of a sender and a receiver that communicate over an artificially unreliable network connection.

In particular:

* the `starting-point` branch just sets up the minimal environment for starting the experimentation

* the `at-most-once` branch shows the inherent messaging semantics of Akka (not minimal in its implementation but instead minimizing the diff to the following two branches for easy comparison)

* the `at-least-once` branch uses the AtLeastOnceDelivery support trait and allows you to try different failure modes to observe duplication or out of order reception of messages

* the `exactly-once` branch then shows the equivalent of what is commonly called “guaranteed delivery”, but feel free to place `fail()` statements in strategic places to exhibit cases where this does not hold (just as in every other commercial implementation as well)