
Microservices: Up and Running
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Content
- Intro
- Copyright
- Table of Contents
- Preface
- Who Should Read This Book
- What You'll Need
- Conventions Used in This Book
- Using Code Examples
- O'Reilly Online Learning
- How to Contact Us
- Acknowledgments
- Chapter 1. Toward a Microservices Architecture
- What Are Microservices?
- Reducing Coordination Costs
- The Coordination Cost Problem
- The Hard Parts
- Learning by Doing
- The "Up and Running" Microservices Model
- Decisions, Decisions.
- Writing a Lightweight Architectural Decision Record
- Summary
- Chapter 2. Designing a Microservices Operating Model
- Why Teams and People Matter
- Team Size
- Team Skills
- Interteam Coordination
- Introducing Team Topologies
- Team Types
- Interaction Modes
- Designing a Microservices Team Topology
- Establish a System Design Team
- Building a Microservices Team Template
- Platform Teams
- Enabling and Complicated-Subsystem Teams
- Consumer Teams
- Summary
- Chapter 3. Designing Microservices: The SEED(S) Process
- Introducing the Seven Essential Evolutions of Design for Services: The SEED(S) Method
- Identifying Actors
- Example Actors in Our Sample Project
- Identifying Jobs That Actors Have to Do
- Using Job Story Format to Capture JTBDs
- Example JTBDs in Our Sample Project
- Discovering Interaction Patterns with Sequence Diagrams
- Deriving Actions and Queries from JTBDs
- Example Queries and Actions for Our Sample Project
- Describing Each Query and Action as a Specification with an Open Standard
- Example OAS for an Action in Our Sample Project
- Getting Feedback on the API Specification
- Implementing Microservices
- Microservices Versus APIs
- Summary
- Chapter 4. Rightsizing Your Microservices: Finding Service Boundaries
- Why Boundaries Matter, When They Matter, and How to Find Them
- Domain-Driven Design and Microservice Boundaries
- Context Mapping
- Synchronous Versus Asynchronous Integrations
- A DDD Aggregate
- Introduction to Event Storming
- The Event-Storming Process
- Introducing the Universal Sizing Formula
- The Universal Sizing Formula
- Summary
- Chapter 5. Dealing with the Data
- Independent Deployability and Data Sharing
- Microservices Embed Their Data
- Embedding Data Should Not Lead to an Explosion in the Number of Database Clusters
- Data Embedding and the Data Delegate Pattern
- Using Data Duplication to Solve for Independence
- Distributed Transactions and Surviving Failures
- Event Sourcing and CQRS
- Event Sourcing
- Improving Performance with Rolling Snapshots
- Event Store
- Command Query Responsibility Segregation
- Event Sourcing and CQRS Beyond Microservices
- Summary
- Chapter 6. Building an Infrastructure Pipeline
- DevOps Principles and Practices
- Immutable Infrastructure
- Infrastructure as Code
- Continuous Integration and Continuous Delivery
- Setting Up the IaC Environment
- Set Up GitHub
- Install Terraform
- Configuring Amazon Web Services
- Setting Up an AWS Operations Account
- Configure the AWS CLI
- Setting Up AWS Permissions
- Creating an S3 Backend for Terraform
- Building an IaC Pipeline
- Creating the Sandbox Repository
- Understanding Terraform
- Writing the Code for the Sandbox Environment
- Building the Pipeline
- Testing the Pipeline
- Summary
- Chapter 7. Building a Microservices Infrastructure
- Infrastructure Components
- The Network
- The Kubernetes Service
- The GitOps Deployment Server
- Implementing the Infrastructure
- Installing kubectl
- Setting Up the Module Repositories
- The Network Module
- The Kubernetes Module
- Setting Up Argo CD
- Testing the Environment
- Cleaning Up the Infrastructure
- Summary
- Chapter 8. Developer Workspace
- Coding Standards and the Developer's Setup
- 10 Workspace Guidelines for a Superior Developer Experience
- Setting Up a Containerized Environment Locally
- Installing Multipass
- Entering the Container and Mapping Folders
- Installing Docker
- Testing Docker
- Advanced Local Docker Usage: Installing Cassandra
- Installing Kubernetes
- Summary
- Chapter 9. Developing Microservices
- Designing Microservice Endpoints
- Flights Microservice
- Reservations Microservice
- Designing an OpenAPI Specification
- Implementing the Data for a Microservice
- Redis for the Reservations Data Model
- MySQL Data Model for the Flights Microservice
- Implementing Code for a Microservice
- The Code Behind the Flights Microservice
- Health Checks
- Introducing a Second Microservice to the Project
- Hooking Services Up with an Umbrella Project
- Summary
- Chapter 10. Releasing Microservices
- Setting Up the Staging Environment
- The Ingress Module
- The Database Module
- Forking the Staging Infrastructure Project
- Configuring the Staging Workflow
- Editing the Staging Infrastructure Code
- Shipping the Flight Information Container
- Introducing Docker Hub
- Configuring Docker Hub
- Configuring the Pipeline
- Deploying the Flights Service Container
- Understanding Kubernetes Deployments
- Creating a Helm Chart
- Creating the Microservices Deployment Repository
- Argo CD for GitOps Deployment
- Clean Up
- Summary
- Chapter 11. Managing Change
- Changes in a Microservices System
- Be Data-Oriented
- The Impact of Changes
- Three Deployment Patterns
- Considerations for Our Architecture
- Infrastructure Changes
- Microservices Changes
- Data Changes
- Summary
- Chapter 12. A Journey's End (and a New Beginning)
- On Complexity and Simplification Using Microservices
- Microservices Quadrant
- Measuring the Progress of a Microservices Transformation
- Summary
- Index
- About the Authors
- Colophon
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