aws-sdk-java-v2-core

Configure AWS SDK v2 clients using client builders, setting region, credentials provider, and HTTP client. The builder pattern lets you customize authentication, timeouts, and connection pooling before instantiating service clients for S3, DynamoDB, or other AWS services.

AWS SDK v2 supports multiple credential providers—default chain, IAM roles, environment variables, and profiles. Use the credential chain for automatic detection in production, explicitly specify providers for local development, and avoid hardcoding secrets in code.

Yes, AWS SDK v2 integrates with Spring Boot through client builder configuration in beans or application properties. Spring Boot simplifies credential resolution and lifecycle management for multiple AWS service clients in the same application.

Configure timeouts and HTTP client implementation via the client builder. Choose Apache, Netty, or URLConnection as the underlying HTTP transport, then set connection timeout, socket timeout, and retry policies to match your application's latency and reliability requirements.

Point the SDK client to a LocalStack or Testcontainers endpoint by overriding the service endpoint URL in the builder. Mock AWS services run in containers, letting you test credential flows, client configuration, and error handling without hitting production AWS.

AWS SDK v2 publishes metrics and logs automatically when configured. Enable retry policies through the builder, use ExecutionInterceptors for custom error handling, and CloudWatch captures request-level metrics, latency, and failure rates for observability.