A company has created a fitness tracking mobile app the uses a serverless REST API. The app consists of an Amazon API Gateway API with a Regional endpoint, AWS Lambda functions and an Amazon Aurora MySQL database cluster. The company recently secured a deal with a sports company to promote the new app which resulted in a significant increase in the number of requests received. Unfortunately, the increase in traffic resulted in sporadic database memory errors and performance degradation. The traffic included significant numbers of HTTP requests querying the same data in short bursts of traffic during weekends and holidays. The company needs to improve its ability to support the additional usage while minimizing the increase in costs associated with the solution. Which strategy meets these requirements?