You manage a web application running on App Engine that utilizes Cloud SQL and Cloud Storage for data storage. Following a brief traffic surge, you observe significant latency across all user requests, elevated CPU usage, and an increased number of application processes—despite traffic returning to normal levels. Initial analysis shows:

• Latency remains high for both Cloud SQL database queries and Cloud Storage image retrievals.
• No recent website changes coincided with the latency increase.
• User-facing error rates remain unchanged.

With another traffic spike anticipated soon, how would you ensure users avoid latency issues?