Gain insights into real-world microservice implementation, exploring tech stacks, Kafka, Docker, Kubernetes, and more. Learn about synchronous and asynchronous integrations with hands-on coding demonstrations.

docker_ms2_v3.tar.gz

scs-esi

kafka

atom

links

netflix

consul

atom-kafka-scs-netflix-up

links-up

Microservices are one of the most important software architecture trends, but it’s one thing to define an architecture and quite another to implement it. 

This course focuses on the nitty-gritty details of real-world implementation. You’ll learn recipes for tech stacks that can be used to implement microservices, as well as the pros and cons of each. 

You’ll start by exploring some fundamental concepts for implementing microservices. Within each concept, you’ll learn about the different technologies used to implement it. The technologies include: Frontend Integration with Edge Side Includes (ESI), asynchronous microservices with Kafka and REST feeds, synchronous microservices with the Netflix stack and Consul, Docker, Kubernetes, Cloud Foundry. Each technology you learn about is described and then demonstrated with real code. 

By the end of this course, you’ll be a microservice pro. Whether you’re a software engineer or an engineering manager, this course will prove useful throughout your career.

Microservice Architecture: Practical Implementation

# Introduction
This course focuses first on introducing technologies. An example system is presented for each technology in each chapter. In addition, the quick start allows the reader to
rapidly gain practical experience with the different technologies and to understand how they work with the help of the examples.

* First, the necessary software has to be *installed* on the computer.
 The installation is described in this lesson.

* *Maven* handles the build of the examples.
The  [next lesson](https://www.educative.io/courses/microservice-architecture-practical-implementation/maven-commands) explains how to use Maven.

* All the examples use *Docker* and *Docker Compose*.
 A couple of lessons in this appendix  describe the most
 important commands for Docker and Docker Compose.

For the Maven-based build and also for Docker and Docker Compose, the
chapters contain basic instructions and advice on troubleshooting.

# Installing necessary software
The source code of the examples is available on Github. For access,
version control *git* must be installed, see
<https://git-scm.com/book/en/v2/Getting-Started-Installing-Git>. If
the installation was successful, a call of `git` in the command prompt
will work.

The examples are implemented in Java. Therefore, *Java* has to be
installed. Instructions can be found at
  <https://www.java.com/en/download/help/download_options.xml>. Since
  the examples have to be compiled, a JDK (Java Development Kit) has
  to be installed. The JRE (Java Runtime Environment) is not
  enough. When the installation is completed, it should be
  possible to start `java` and `javac` in the command prompt. 

The examples run in Docker containers. This requires an installation
of *Docker Community Edition*, see
<https://www.docker.com/community-edition/>. Docker can be called with
`docker`. This should work without errors after the installation.

The examples require a lot of memory in some cases. *Docker should have about 4 GB* available. Otherwise, Docker containers may be terminated due to lack of memory. Under Windows and macOS you can find the settings for this in the Docker application under Preferences/Advanced. If there is not enough memory, Docker containers are terminated. This is shown by the entry `killed` in the logs of the containers.

After installing Docker, you should be able to call `docker-compose`.
If *Docker Compose* cannot be invoked, a separate installation is
necessary, see <https://docs.docker.com/compose/install/>.


This lesson gives you an introduction to what a local setup for these examples will look like!

Preface

Self-contained Systems

Concept: Frontend Integration

Recipe: Links and Client-side Integration

Recipe: Server-side Integration using Edge Side Includes (ESI)

Concept: Asynchronous Microservices

Recipe: Messaging and Kafka

Recipe: Asynchronous Communication with Atom and REST

Concept: Synchronous Microservices

Recipe: REST with the Netflix Stack

Recipe: REST with Consul and Apache httpd

Concept: Microservices Platforms

Recipe: Docker Containers with Kubernetes

Recipe: PaaS with Cloud Foundry

Appendix

Installation of the Environment

Introduction #