Build, Operation, and Organization

Code migration alone is not enough to turn a legacy system into a microservices system.

• The microservices must also be built. A suitable tool must be selected for this purpose. In addition, the continuous integration server has to cope with the multitude of microservices.

• Similarly, technologies and approaches must be introduced to enable the deployment and operation of microservices.

• Finally, a suitable test strategy must be established. This also requires the automated setup of test environments and the assurance that the tests are independent.

  • For example, stubs that simulate microservices or the legacy system are useful for this purpose, as are consumer-driven contract tests. They safeguard the requirements for the interfaces of microservices or legacy systems with the help of tests.
  • However, legacy systems are often very complicated, so these techniques are difficult to implement.

Therefore, dealing with the ...