Migration strategies are used in information technology to migrate systems in order to replace them.
Kafka is a scalable, reliable and highly available platform that can achieve high throughput. Therefore, applications that use Kafka are decoupled from each other and communicate only through these Kafka topics. Because messages can be persisted in Kafka, messages that are written faster than they are read can be retrieved and processed later.
CHICKEN LITTLE STRATEGY
Analysis of the legacy system: For a successful migration, it is essential to first understand how the legacy system works. Hopefully existing documentation will help here, otherwise Reverse Engineering.
Disassembling the legacy system: The legacy system must be changed to the extent that defined interfaces exist between the individual modules and the database backends.
Develop the interfaces of the target system.
Developing the target applications: Consideration of whether the functionality of the legacy system application should be replicated, or should only be as close as possible to that of the legacy application.
Developing the database backend: Here the results of the previous steps are included, recommended is the development with a relational database based on SQL.
Installing the target environment: Setting up a test environment and testing this environment.
Development and installation of Gateways: The gateways are responsible for extracting data from the legacy system and transferring it to the target system.
Migration of the database of the old system: Installation of the new database system, then migration of the data between the old and the target system.
Migration of the legacy applications: Gradually replacing the individual modules of the legacy applications and integrating them into the overall system.