Troubleshoot and minimize AWS DMS replication latency with Amazon S3 as a target

This article discusses how to troubleshoot and minimize replication latency when using Amazon S3 as a target with AWS Database Migration Service (DMS).

Specifically, the article covers:

• How to troubleshoot latency issues by identifying source and target latency, checking resource utilization, reviewing S3 settings, and checking DMS task logs
• A use case where high target latency was caused by contention issues during replication to S3, with details on the symptoms and observations
• Steps to address target performance issues by adjusting DMS endpoint settings like cdcMaxBatchInterval and cdcMinFileSize, and task settings like MinTransactionSize and CommitTimeout
• Additional configurations like increasing MemoryLimitTotal and MemoryKeepTime if the "Reading from source is paused" issue persists
• Conclusion emphasizing the importance of testing changes and leveraging DMS features for monitoring and automation