https://nryanov.com/categories/at-least-once/Recent content in At-Least-Once on Nikita RyanovHugoen-usWed, 01 May 2024 04:30:00 +0300https://nryanov.com/overview/delivery-and-processing-semantics/Wed, 01 May 2024 04:30:00 +0300https://nryanov.com/overview/delivery-and-processing-semantics/<p>In this article I want to make an overview of a delivery semantics in messaging systems, describe delivery guarantee and add my own thoughts about all of this.</p> <h1 id="delivery-semantics-overview">Delivery semantics: overview <!-- raw HTML omitted --><!-- raw HTML omitted --></h1> <p>So, what exactly is <code>delivery semantics</code> and why this is important? <code>Delivery semantics</code> is about guarantees provided by messaging system or delivery protocol. These guarantees are about message order (delivery and processing), delivery reliability, duplication allowance and so on. In other words <code>delivery semantic</code> determines how exactly message will be handled in terms of delivery.</p>