Updated on 2025-08-07 GMT+08:00

Synchronization Overview

Real-time synchronization refers to the real-time flow of key service data from sources to destinations while consistency of data can be ensured.

It is different from migration. Migration means moving your overall database from one platform to another. Synchronization refers to the continuous flow of data between different services.

You can use real-time synchronization in many scenarios such as real-time analysis, report system, and data warehouse environment.

Real-time synchronization is mainly used for synchronizing tables and data. It can meet various requirements, such as many-to-one, one-to-many synchronization, dynamic addition and deletion of tables, and synchronization between tables with different names.

Figure 1 Real-time synchronization principle

Supported Database Types

The following table lists the source database and destination database types supported by DRS in real-time synchronization.

Table 1 Synchronization scheme

Source DB

Destination DB Type

Synchronization Mode

Related Documents

  • On-premises MySQL databases
  • MySQL databases on an ECS
  • MySQL databases on other clouds

RDS for MySQL

Incremental

Full+Incremental

From MySQL to MySQL (To the cloud)

RDS for MySQL

  • On-premises MySQL databases
  • MySQL databases on an ECS
  • MySQL databases on other clouds

Incremental

Full+Incremental

From MySQL to MySQL (Out of the cloud)

  • On-premises PostgreSQL databases
  • PostgreSQL databases on an ECS
  • PostgreSQL databases on other clouds
  • RDS for PostgreSQL

RDS for PostgreSQL

Incremental

Full

Full+Incremental

From PostgreSQL to PostgreSQL

DDM

RDS for MySQL

Incremental

Full

Full+Incremental

From DDM to MySQL (To the cloud)

  • On-premises MySQL databases
  • MySQL databases on an ECS
  • MySQL databases on other clouds

Incremental

Full

Full+Incremental

From DDM to MySQL (Out of the cloud)