Transactions and data isolation in MySQL and PostgreSQL - how does it work?

The article on the PlanetScale blog discusses database transactions, which are a crucial element in ensuring data integrity within applications. The author begins by explaining fundamental concepts related to transactions, such as ATOMICITY, CONSISTENCY, ISOLATION, and DURABILITY, collectively known as the ACID principles. These principles aid in managing operations, ensuring that all actions in a transaction are completed in their entirety or not at all, which is essential for systems processing large amounts of data. The article also explores differences between traditional databases and modern cloud solutions that allow for easier management and scaling of transactions. The conclusion emphasizes the importance of proper transaction management in building high-availability and high-performance systems while encouraging experimenting with various approaches to data management in the context of transactions.