Cloud-Based Microservices

Use this field guide as you transform your enterprise to combine cloud computing with a microservices architecture.

The recent surge in the popularity of microservices in software development is mainly due to the agility it brings and its readiness for the cloud. The move to a microservices architecture on the cloud involves a gradual evolution in software development. Many enterprises are embarking on this journey, and are now looking for architects who are experienced in building microservices-based applications in the cloud.

A master architect should be able to understand the business, identify growth hurdles, break a monolith, design microservices, foresee problems, overcome challenges, change processes, decipher CSP services, strategize cloudification, adopt innovations, secure microservices, prototype solutions, and envision the future. CLOUD-BASED MICROSERVICES provides you with the information you need to be successful in such an endeavor.

WHAT YOU WILL LEARN

* Be familiar with the challenges in microservices architecture and how to overcome them
* Plan for a cloud-based architecture
* Architect, build, and deploy microservices in the cloud
* Know how security, operations, and support change in this architecture

WHO THIS BOOK IS FOR

Engineers, architects, and those in DevSecOps attempting to move their enterprise software to take advantage of microservices and the cloud and be more nimble

CHANDRA RAJASEKHARAIAH has led multi-million dollar enterprise initiatives in cloud-based microservice development. For the past five years, he has also migrated giant enterprise monoliths to microservices-based applications on the cloud. He has more than 20 years of experience in the software engineering industry as a principal, enterprise architect, solutions architect, and software engineer. His experience includes multiple domains—retail, e-commerce, telecommunications, telematics, travel, electronic payments, automobile—and gives him a broad base to draw parallels, abstract problems, and create innovative solutions. He enjoys architecting, delivering, and supporting enterprise products.

PREFACE

What This Book is

What This Book is Not

CHAPTER 1: CASE STUDY: ENERGENCE CO.

Managing Production and Distribution

Hardware and Software Infrastructure

Monolithic Software Solutions

Growth Opportunities and Objectives

Next Steps

Further Related Reading

Summary

Points to Ponder

CHAPTER 2: MICROSERVICES: WHAT AND WHY?

Origins

Microservices Architecture in a Nutshell

Successful Implementation of Microservices

Orchestration and Choreography

Microservices Migration Plan for Energence

Breaking a Monolith into Modules

Breaking Modules into Sub-modules

Establishing Microservices Architecture

Advantages and Gains with Microservices

Further Related Reading

Summary

Points to Ponder

CHAPTER 3: ARCHITECTURAL CHALLENGES

Identifying and Classifying Challenges

AC1: Dispersed Business Logic

AC2: Lack of Distributed Transactions

Orchestrated Domains

Choreographed Domains

AC3: Inconsistent Dynamic Overall State

Challenges in Exchanging Data between Microservices

Problems with Sharding

AC4: Difficulty in Gathering Composite Data

AC5: Difficulty in Debugging Failures and Faults

AC6: The v2 Dread – Difficulty in Evolving

Further Related Reading

Summary

Points to Ponder

CHAPTER 4: OVERCOMING ARCHITECTURAL CHALLENGES

Service Catalog

Sagas (Long-Running Transactions)

Ignoring Errors

Compensating Errors Inline

Compensating Errors Offline

Implementing Sagas

Maintaining Global States

The Scenario of Dynamic Overall State

Intermittent-Peek Option

Always-Listening Option

Other Options and Larger Questions

Centralized View

Observability

Contract Testing

Further Related Reading

Summary

Points to Ponder

CHAPTER 5: PROCESS CHANGES

Continuous Integration

Build and Integration Environments

Automated Testing

Performance Testing

Continuous Delivery

Infrastructure as Cod

DevSecOps

Further Related Reading

Summary

Points to Ponder

CHAPTER 6: CLOUDIFICATION – STRATEGY

Overall Setup for Microservices in Cloud

Networking and Connectivity

Regions and Zones

Compute

Integration

Databases and Traditional Datastores

Special-Purpose Datastores

Cost Analysis

Summary

Points to Ponder

CHAPTER 7: CLOUDIFICATION – CORE CONCEPTS

Virtualization and Containerization

Container Orchestration

Service Meshes

Traffic Control

Establishing and Securing Communication

Building Overall Observability

Challenges and State of the Art of Service Meshes

FaaS, aka, Serverless

Storage and Integration Services

Storage Services

Integration Services

Further Related Reading

Summary

Points to Ponder

CHAPTER 8: SECURING MICROSERVICES ON CLOUD

Securing Microservices

Reducing the Attack Surface

Securing Services

Securing Outgoing Communication

Securing Microservices on Cloud

API Gateways and Load Balancers

IAM of CSPs

Securing Inter-Service Communication

Processing Integrity

Trusted Binaries

Trusted Execution

Availability

DR-Disaster Recovery

Multi-region Solutions

Further Related Reading

Summary

Points to Ponder

CHAPTER 9: MICROSERVICES, HERE AND BEYOND

Trends

Support and Operations

Microservices on Cloud

Changing Security Landscape

Alternate Thoughts

Monoliths are Dead, Long Live the Monolith

IN CLOSING

BIBLIOGRAPHY

APPENDIX

COMPARING CSPS