AWS DynamoDB perguntas e respostas de entrevista
Pergunta 31. Explain the differences between DynamoDB and Amazon RDS.
DynamoDB is a NoSQL database service, while Amazon RDS is a relational database service. DynamoDB is designed for scalability and high availability, while RDS offers traditional relational database features.
Pergunta 32. What is the purpose of the 'TransactWriteItems' operation in DynamoDB?
'TransactWriteItems' allows you to perform multiple write operations as a single, atomic transaction. Either all the operations in the transaction succeed, or none of them are applied.
Pergunta 33. Explain the benefits of using DynamoDB Accelerator (DAX).
DAX provides low-latency read access to DynamoDB tables by caching frequently accessed data. It reduces the need to read from the DynamoDB table directly, improving application performance.
Pergunta 34. What is the purpose of the 'CreateTable' operation in DynamoDB?
The 'CreateTable' operation is used to create a new table in DynamoDB. It involves specifying the table name, primary key attributes, and provisioned throughput settings.
Pergunta 35. Explain the concept of Point-in-Time Recovery (PITR) in DynamoDB.
PITR allows you to restore a table to any point in time within the last 35 days. It helps in recovering from accidental data loss or corruption.
Mais uteis segundo os usuarios:
- What is DynamoDB?
- Explain the concept of the 'GetItem' operation in DynamoDB.
- How does DynamoDB handle transactions?