Deep dive into fundamental knowledge about microservices and background information about the concepts behind the microservices architecture approach.

Microservices Architecture

In this module we’ll learn about microservices in depth and understand the reasons for using and not using microservices. We’ll also learn about micro and macro architecture, strategies for migrating old systems, the role of Docker in this architecture, and technologies for implementing microservices like Spring Boot and Go.

After this module, you’ll be better equipped to implement microservices.

An Introduction to Microservice Principles and Concepts

Microservices represent an extreme type of modularization. Their separate deployment is the foundation for a **very strong degree of
decoupling**. This results in **numerous advantages**.

 A crucial benefit is **isolation** at different levels. 
 - This not only facilitates deployment but also limits potential failures to individual microservices.
-  Microservices can be individually scaled, technology decisions affect only individual microservices, and security problems can also be restricted to individual microservices. 
- The isolation allows one to more easily develop a microservices system with a large team because it requires less coordination between teams. 
- In addition, smaller deployment artifacts make **continuous delivery easier**.
- Moreover, replacing a legacy system is much easier with microservices because new microservices can supplement the system without the necessity of large code changes in the legacy system.

The **challenges** are mostly associated with **operation**. Appropriate technological decisions should strengthen the intended benefits, and at
the same time they should minimize disadvantages like the complexity
in operation.

Of course, integration and communication between microservices is more
complex than the calls between modules within a deployment monolith. The added technological complexity represents an additional important
challenge for microservice architectures.

That's it for this chapter! Here's a quick summary of what you learned.

Chapter Conclusion