An Amazon RDS Database Instance Is Used by Many Applications

question 130

Multiple Choice

An Amazon RDS database instance is used by many applications to look up historical data. The query rate is relatively constant. When the historical data is updated each day, the resulting write traffic slows the read query performance and affects all application users. What can be done to eliminate the performance impact on application users?

• A) Make sure Amazon RDS is Multi-AZ so it can better absorb increased traffic.
• B) Create an RDS Read Replica and direct all read traffic to the replica.
• C) Implement Amazon ElastiCache in front of Amazon RDS to buffer the write traffic.
• D) Use Amazon DynamoDB instead of Amazon RDS to buffer the read traffic.

---

Definitions:

Lusitania

British passenger liner sunk by a German U-boat, May 7, 1915, creating a diplomatic crisis and public outrage at the loss of 128 Americans (roughly 10 percent of the total aboard); Germany agreed to pay reparations, and the United States waited two more years to enter World War I.

William Jennings Bryan

An American orator and politician from Nebraska, known for his advocacy of populism and as a three-time Democratic presidential candidate.

Fourteen Points

A statement of principles for peace used for peace negotiations in order to end World War I, proposed by American President Woodrow Wilson.

Peace Conference

A meeting held with the aim of resolving conflicts and establishing peace between disagreeing or warring parties.