Help Center/ EventGrid/ Best Practices/ Data Synchronization Between Kafka Instances Based on Serverless Event Stream/ Overview
Updated on 2025-08-07 GMT+08:00
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Overview

Event streams pull, filter, and transform events generated by event sources in real time, and route them to event targets for lightweight and efficient stream processing.

Event streams can route messages from source DMS for Kafka to target DMS for Kafka. For details, see Event Stream Overview.

This chapter describes how to use the serverless event stream function of EG to synchronize data between DMS for Kafka instances.

Prerequisites

  • EG is enabled and permissions are authorized.
  • A Kafka instance is purchased.
  • A DMS for Kafka connection is created. For details, see Connections.
    • The size of a single message cannot exceed 256 KB.
    • No Service Level Agreement (SLA) is committed during OBT.
    • Currently, cross-region deployment and Kafka-OBS (being planned) are not supported.
    • On-cloud, off-cloud, and cross-cloud vendors require private lines on the user side.
    • Related monitoring metrics are available since September 30, 2023.