# Change Data Capture: Trade-offs in Event Granularity, Schema Coupling, and Sensitive Data Exposure

DevFeed: [Change Data Capture: Trade-offs in Event Granularity, Schema Coupling, and Sensitive Data Exposure](<https://devfeed.tech/articles/cdc-isn-t-the-shortcut-you-think-it-is-17950.md>)

Original publisher: [Read original article](<https://newsletter.systemdesignclassroom.com/p/cdc-isnt-the-shortcut-you-think-it-is>)

Author: Raul Junco

Published: 2025-10-07T11:52:11Z

Content type: article

Language: en

Sources: [System Design Classroom](<https://devfeed.tech/sources/system-design-classroom.md>)

Topics: [Architecture & Design](<https://devfeed.tech/topics/architecture-design.md>), [data](<https://devfeed.tech/topics/data.md>), [Database](<https://devfeed.tech/topics/database.md>)

Tags: [code](<https://devfeed.tech/tags/code.md>), [data](<https://devfeed.tech/tags/data.md>), [database](<https://devfeed.tech/tags/database.md>), [security](<https://devfeed.tech/tags/security.md>), [software-architecture](<https://devfeed.tech/tags/software-architecture.md>)

## AI overview

This article examines trade-offs of using Change Data Capture for event publishing. It explains that CDC can expose low-level row changes instead of meaningful business events, couple consumers to database schemas, spread sensitive data, and require consumers to reconstruct relational context.

## Source excerpt

7 hidden costs of "free" event publishing