AWS › AWS Secrets Manager & Parameter Store
How do applications retrieve secrets at runtime, and what caching strategies help reduce the cost and latency of frequent secret retrieval?
IntermediateAnswer
Applications typically call the Secrets Manager or Parameter Store API directly using an SDK to retrieve a secret value when needed, and to avoid the cost and latency of repeatedly calling this API for every single request, many applications implement local caching with a defined time to live, or use official caching client libraries provided by AWS, which automatically handle refreshing the cached value periodically or when a rotation event occurs.
import boto3
client = boto3.client('secretsmanager')
response = client.get_secret_value(SecretId='db-password')
secret = response['SecretString']Real-world example A high traffic application uses the AWS provided Secrets Manager caching client library to retrieve its database password once and reuse that cached value for subsequent requests, avoiding thousands of unnecessary API calls per minute while still automatically refreshing if the underlying secret is rotated.