A delta migration transfers only the changes made to an environment since the last migration, while a full migration transfers all changes present in the environment.
To perform a delta migration, you must satisfy these two conditions:
- Your target environment must be registered in your source environment.
- Both environments must be synchronized.
Scenarios for Delta Migration
Basic Delta Migration Example: Suppose you have a source environment, Alpha, and a target environment, Beta. You create object X in Alpha and migrate it. Later, you create object Y in Alpha and perform another migration. If this second migration is a delta migration, only object Y is transferred. In contrast, a full migration would transfer both objects X and Y.
Multi-Environment Setup: Imagine a setup with three environments: development (source), test (target), and production (target).
Between Development and Test Environments:
- Application change C1 is created in a sandbox in the development environment, then published and moved to the test environment using delta migration.
- Application change C2 is similarly created, published, and transferred to the test environment using delta migration.
Between Development and Production Environments:
- Application changes C1 and C2, already published in the development environment, are moved to the production environment using delta migration.
This approach ensures that only recent changes are transferred, reducing redundant data movement and ensuring up-to-date synchronization across environments.
