In a distributed system where data consistency is crucial, how would you ensure data integrity while using a NoSQL database?

Using strong consistency models like linearizability or serializability ensures data integrity in a distributed system by guaranteeing that all nodes see the same data at the same time. Implementing eventual consistency with techniques like vector clocks or CRDTs may lead to eventual convergence but does not guarantee immediate consistency. Distributed transactions with two-phase commit protocols can lead to performance issues and increased complexity. Designing a data versioning system with rollback capabilities helps in data recovery but does not directly address data integrity in real-time.