In today’s world of distributed systems and microservices, it is crucial to maintain consistency. Microservice architecture is considered almost a standard for building modern, flexible, and reliable high-loaded systems. But at the same time introduces additional complexities.

Monolith vs Microservices

In monolithic applications, consistency can be achieved using transactions. Within a transaction, we can modify data in multiple tables. If an error occurred during the modification process, the transaction would roll back and the data would remain consistent. Thus consistency was achieved by the database tools. In a microservice architecture, things get much more complicated. At some point, we will have to change data not only in the current microservice but also in other microservices.

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