Gain insights into microservice principles, their pros and cons, Micro and Macro architecture, migration strategies, Docker's role, and technologies to effectively implement microservices.

docker_ms2_v3.tar.gz

SpringBoot

test

SpringMain

ms-1-scs-esi

SpringMain-copy

scs-esi

scs-esi-copy

scs-esi-up

Microservices are one of the most important and popular software architecture trends. This architecture forms the base for a lot of companies including: Amazon, Netflix, Spotify, and Uber. 

In this course you’ll learn microservices in depth and understand reasons for and against microservices. Beyond that, you’ll learn about Micro and Macro architecture, strategies for migrating old systems, the role of Docker in this architecture, and technologies for implementing microservices. 

After taking this course, you’ll be better equipped to implement microservices for your own use.

An Introduction to Microservice Principles and Concepts

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](https://martinfowler.com/articles/consumerDrivenContracts.html).
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 first microservice can require extra effort because the infrastructure for build and deployment needs to be set up. It is conceivable to build the infrastructure later, but it is recommended to start building the infrastructure as early as
possible in order to reduce the risk of migration. 

One or a few microservices can still be operated with an inadequate solution for build and deployment. However, once the number of microservices increases, without appropriate infrastructure, the necessary effort will become so high that it can lead to project failure.


In this lesson, we'll discuss the build, operation, and organization pertaining to moving a legacy system to a microservices architecture.

Preface

Microservices

Micro and Macro Architecture

Migration

Docker

Technical Micro Architecture

Appendix

Build, Operation, and Organization