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Kafka Summit London 2019

May 13-14, 2019 | London


Change Data Streaming Patterns For Microservices With Debezium

Session Level: Intermediate

Debezium (noun | de·be·zi·um | /dɪ:ˈbɪ:ziːəm/) – Secret Sauce for Change Data Capture Apache Kafka has become the defacto standard for asynchronous event propagation between microservices. Things get challenging though when adding a service’s database to the picture: How can you avoid inconsistencies between Kafka and the database? Enter change data capture (CDC) and Debezium. By capturing changes from the log files of the database, Debezium gives you both reliable and consistent inter-service messaging via Kafka as well as instant read-your-own-write semantics for services themselves. Join this session to learn how to leverage CDC for reliable microservices integration and solving typical challenges such as gradually extracting microservices from existing monoliths, maintaining different read models in CQRS-style architectures, and updating caches as well as full-text indexes. You’ll find out how Debezium streams all the changes from datastores such as MySQL, PostgreSQL, SQL Server and MongoDB into Kafka, and how Debezium is designed to not compromise on data correctness and completeness also if things go wrong. In a live demo we’ll show how to use Debezium to set up a change data stream out of your application’s database, without any code changes needed. You’ll see how to consume change events in other services, how to gain real-time insight into your changing data using Kafka Streams and much more.

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