Posted On: Jul 12, 2021
AWS Cloud Map now provides the ability to configure the negative caching for DNS queries. AWS Cloud Map is a cloud resource discovery service that allows customers to define custom names for their application resources, such as Amazon Elastic Container Services (ECS) tasks, Amazon Elastic Compute Cloud (EC2) instances, Amazon DynamoDB tables, or any other cloud resource. They can then use these custom names to discover the network location and metadata of these cloud resources from their applications using AWS SDK and authenticated API queries.
Customers can now configure how long the negative results of DNS queries are cached when creating new or updating existing AWS Cloud Map namespaces. By tuning this value to an appropriate duration, customers can improve resilience during deployments by minimizing the impact of previously negative DNS query responses being cached for longer than desired.