Microservices, Microservices Pattern, Transactions, Transaction Management, Distributed Systems.
https://betterprogramming.pub/cqrs-software-architecture-pattern-the-good-the-bad-and-the-ugly-e9d6e7a34daf - complex - database dependent, requires expertise in a variety of database technologies. - using a large number of databases means more points of failure. - need to handle data consistency