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Posted to commits@cassandra.apache.org by "Vinay Chella (Jira)" <ji...@apache.org> on 2020/06/11 18:23:00 UTC
[jira] [Created] (CASSANDRASC-27) CDC reader in Apache Cassandra
Sidecar
Vinay Chella created CASSANDRASC-27:
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Summary: CDC reader in Apache Cassandra Sidecar
Key: CASSANDRASC-27
URL: https://issues.apache.org/jira/browse/CASSANDRASC-27
Project: Sidecar for Apache Cassandra
Issue Type: New Feature
Reporter: Vinay Chella
Assignee: Tharanga Sampath Gamaethige
Apache Cassandra has the CDC (Change Data Capture) features since 3.8. This is further enhanced with (CASS-12148) in Cassandra 4.0.
However, there’s no generally available mechanism to stream changes out of a Cassandra database; hence the utility of this feature is limited if not absent.
Many applications use Cassandra as their primary data store. For various reasons(Caching, analyzing, indexing, etc), this data needs to be synchronized with derived/secondary data stores. We would like to emit change streams in real-time to consumers so that changes to Cassandra can be used for various purposes.
*Goals*
* Enhance Apache Cassandra sidecar with a CDC reader that can read and emit changes in real-time. Priority for the initial implementation is safety and correctness, performance enhancements will follow in subsequent iterations
*Nongoals*
* Modify Cassandra storage engine to emit changes
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