Understanding Transaction Isolation Levels in Rails with Simple Examples - DEV Community

01/08/2023
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In this article, we will discuss the usage of database transactions in a Rails application, with a particular focus on one of the ACID principles - Isolation - and its four levels. We will explore what these isolation levels are, why they are necessary, and the problems they aim to solve. Additionally, we will provide a straightforward working example of each isolation level using the Rails console. By the end of the article, you will have a decent understanding of isolation levels, and you will be able to verify their behavior on your own to ensure how they work.
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