Using Asynchronous I/O in Managed Service for Apache Flink - Managed Service for Apache Flink
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Amazon Managed Service for Apache Flink was previously known as Amazon Kinesis Data Analytics for Apache Flink.

Using Asynchronous I/O in Managed Service for Apache Flink

An Asynchronous I/O operator enriches stream data using an external data source such as a database. Managed Service for Apache Flink enriches the stream events asynchronously so that requests can be batched for greater efficiency.

For more information, see Asynchronous I/O in the Apache Flink Documentation.