Book Image

Hands-On Docker for Microservices with Python

By : Jaime Buelta
Book Image

Hands-On Docker for Microservices with Python

By: Jaime Buelta

Overview of this book

Microservices architecture helps create complex systems with multiple, interconnected services that can be maintained by independent teams working in parallel. This book guides you on how to develop these complex systems with the help of containers. You’ll start by learning to design an efficient strategy for migrating a legacy monolithic system to microservices. You’ll build a RESTful microservice with Python and learn how to encapsulate the code for the services into a container using Docker. While developing the services, you’ll understand how to use tools such as GitHub and Travis CI to ensure continuous delivery (CD) and continuous integration (CI). As the systems become complex and grow in size, you’ll be introduced to Kubernetes and explore how to orchestrate a system of containers while managing multiple services. Next, you’ll configure Kubernetes clusters for production-ready environments and secure them for reliable deployments. In the concluding chapters, you’ll learn how to detect and debug critical problems with the help of logs and metrics. Finally, you’ll discover a variety of strategies for working with multiple teams dealing with different microservices for effective collaboration. By the end of this book, you’ll be able to build production-grade microservices as well as orchestrate a complex system of services using containers.
Table of Contents (19 chapters)
Free Chapter
1
Section 1: Introduction to Microservices
3
Section 2: Designing and Operating a Single Service – Creating a Docker Container
7
Section 3:Working with Multiple Services – Operating the System through Kubernetes
13
Section 4: Production-Ready System – Making It Work in Real-Life Environments

Chapter 9

  1. When new business features are received, what analysis needs to be done in a system working under a microservice architecture?

We need to determine what microservice or microservices the new business feature affects. A feature that affects multiple microservices makes its implementation more difficult.

  1. If a feature requires two or more microservices to be changed, how do we decide which should be changed first?

This should be done in a back-to-forward way in order to keep backward compatibility. New features should be added while keeping backward compatibility in mind, so the possibilities are limited. Once the backend is ready, the frontend can be changed accordingly so that we can take advantage of the new feature.

  1. How does Kubernetes help us set up multiple environments?

Creating new namespaces is very easy in Kubernetes. Since the definition of the system is...