Transactions in microservices

Question

I have read some articles about microservices architecture, but no one takes the topic of transaction. All that they says that this is hard to do it. Maybe someone can describe

Answer 1

two-phase commit can be option.Coordinator send commit request message to cohorts.Cohorts send back ok.After then coordinator sends commit message to cohorts.If any failure happpens coordinator sends rollback messages to cohorts.