ExpertEasy1 markMultiple Choice
AZ-305 · Question 30 · Domain 2.4: Non-relational data storage
A small application needs to store 50 GB of simple user profile data (key-value pairs).
The application is hosted in a single Azure region. The data structure is flat, and queries will only ever look up a user by their unique UserID. The primary architectural driver is to minimize monthly costs.
Which data storage solution should you recommend?
A small application needs to store 50 GB of simple user profile data (key-value pairs).
The application is hosted in a single Azure region. The data structure is flat, and queries will only ever look up a user by their unique UserID. The primary architectural driver is to minimize monthly costs.
Which data storage solution should you recommend?
Answer options:
A.
Azure Cosmos DB Table API
B.
Azure Table Storage
C.
Azure SQL Database
D.
Azure Cache for Redis
How to approach this question
Compare Azure Table Storage vs Cosmos DB Table API. Choose Table Storage when cost is the primary driver and global distribution is not needed.
Full Answer
B.Azure Table Storage✓ Correct
Azure Table Storage
Both Azure Table Storage and Azure Cosmos DB Table API store NoSQL key-value data. However, Azure Table Storage is part of Azure Storage accounts and is extremely inexpensive. Cosmos DB is a premium, globally distributed database with higher baseline costs. Since the requirement is single-region, simple lookups, and minimal cost, Azure Table Storage is the correct architectural choice.
Common mistakes
Defaulting to Cosmos DB for all NoSQL workloads. Cosmos DB is powerful but expensive for simple, single-region, cost-sensitive apps.
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