An Online Retail Company Is Planning a Multi-Day Flash Sale

question 124

Multiple Choice

An online retail company is planning a multi-day flash sale that must support processing of up to 5,000 orders per second. The number of orders and exact schedule for the sale will vary each day. During the sale, approximately 10,000 concurrent users will look at the deals before buying items. Outside of the sale, the traffic volume is very low. The acceptable performance for read/write queries should be under 25 ms. Order items are about 2 KB in size and have a unique identifier. The company requires the most cost-effective solution that will automatically scale and is highly available. Which solution meets these requirements?

• A) Amazon DynamoDB with on-demand capacity mode
• B) Amazon Aurora with one writer node and an Aurora Replica with the parallel query feature enabled
• C) Amazon DynamoDB with provisioned capacity mode with 5,000 write capacity units (WCUs) and 10,000 read capacity units (RCUs)
• D) Amazon Aurora with one writer node and two cross-Region Aurora Replicas

---

Definitions:

Stock Price

The current price at which a share of stock is bought or sold in the market.

Dividend Growth Rate

The annual rate at which a company’s dividend payments to shareholders increase over time.

Investor's Return

The gain or loss generated on an investment over a particular period, typically expressed as a percentage of the investment's initial cost.

Stock Price

The current trading price for buying or selling a stock share in the market.