What is CDC (Change Data Capture)?

Change Data Capture (CDC) is a technology that allows tracking and recording data changes in a database or other data source in real-time or with minimal delay. The main idea of CDC is to capture insert, update, and delete operations so that other systems can respond to these changes, for example, for data synchronization, analytics, or microservices integration.

An example of using CDC is updating a cache or index when the main database changes without the need for periodic full data scans. CDC is often implemented through database transaction logs, triggers, or specialized tools (such as Debezium, Oracle GoldenGate, etc.).

Thus, CDC helps ensure data consistency between systems and improves the efficiency of change processing.