You plan to create an Azure Cosmos DB for NoSQL account that will have a single write region and three read regions. You need to set the consistency level for the account. The solution must meet the following requirements:

In the write region, writes must replicate synchronously across at

least three replicas.

In the read regions, reads must see writes in order for transactional

batches.

Throughput for reads and writes must be maximized.

Which consistency level should you select?

Question

You plan to create an Azure Cosmos DB for NoSQL account that will have a single write region and three read regions. You need to set the consistency level for the account. The solution must meet the following requirements:

In the write region, writes must replicate synchronously across at

least three replicas.

In the read regions, reads must see writes in order for transactional

batches.

Throughput for reads and writes must be maximized.

Which consistency level should you select?

Accepted Answer

D. Strong Strong consistency ensures that reads always return the most recent committed version of an item. In a multi-region account with a single write region, this means writes are synchronously committed to a quorum of replicas (typically 3) within the write region before acknowledgement, and all read regions reflect this state, fulfilling all stated requirements.

Answer

A. Consistent Prefix Consistent Prefix ensures that reads never see out-of-order writes but does not guarantee the absolute latest write or synchronous quorum replication.

Answer

B. Bounded Staleness Bounded Staleness allows for a defined maximum staleness, meaning reads may not see the very latest write immediately, which fails the requirement for synchronous replication and immediate ordered reads for transactional batches.

Answer

C. Eventual Eventual consistency offers no ordering guarantees for reads and does not provide the immediate consistency required for transactional batches.

You plan to create an Azure Cosmos DB for NoSQL account that will have a single write region and three read regions. You need to set the consistency level for the account. The solution must meet the…

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