Microservices Training: Technical Introduction

Outline of Technical Introduction To Microservices Training

Chapter 1. Breaking Up Monoliths – Pros and Cons

• Traditional Monolithic Applications and Their Place
• Disadvantages of Monoliths
• Developer’s Woes
• Architecture Modernization
• Architecture Modernization Challenges
• Microservices Architecture is Not a Silver Bullet!
• What May Help?
• In-Class Discussion
• Summary

Chapter 2. Microservice Development

• What are Microservices?
• Microservices vs Classic SOA
• Principles of Microservices Architecture Design
• Domain-Driven Design
• Domain-Driven Design – Benefits
• Microservices and Domain-Driven Design
• Designing for failure
• Microservices Architecture – Pros
• Microservices Architecture – Cons
• Docker and Microservices
• Microservice Deployment with Docker – Workflow
• Writing Dockerfile
• Kubernetes
• What is OpenShift
• OpenShift Architecture
• Microservices and Various Applications
• Web Applications
• Web Applications – Reference Architecture
• Web Applications – When to use?
• Single Page Applications
• Single Page Applications – Benefits
• Traditional Enterprise Application Architecture
• Sample Microservices Architecture
• Serverless & Event-driven Microservice – AWS Lambda
• Summary

Chapter 3. Twelve-factor Applications

• Twelve-factor Applications
• Twelve Factors, Microservices, and App Modernization
• The Twelve Factors
• Categorizing the 12 Factors
• 12-Factor Microservice Codebase
• 12-Factor Microservice Dependencies
• 12-Factor Microservice Config
• 12-Factor Microservice Backing Services
• 12-Factor Microservice Build, Release, Run
• 12-Factor Microservice Processes
• 12-Factor Microservice Port Binding
• 12-Factor Microservice Concurrency
• 12-Factor Microservice Disposability
• 12-Factor Microservice Dev/Prod Parity
• 12-Factor Microservice Logs
• 12-Factor Microservice Admin Processes
• Kubernetes and the Twelve Factors – 1 Codebase
• Kubernetes and the Twelve Factors –
• 2 Dependencies
• Kubernetes and the Twelve Factors – 3 Config
• Kubernetes and the Twelve Factors – 4 Backing Services
• Kubernetes and the Twelve Factors – 5 Build, Release, Run
• Kubernetes and the Twelve Factors – 6 Processes
• Kubernetes and the Twelve Factors – 7 Port Binding
• Kubernetes and the Twelve Factors – 8 Concurrency
• Kubernetes and the Twelve Factors – 9 Disposability
• Kubernetes and the Twelve Factors – 10 Dev/Prod Parity
• Kubernetes and the Twelve Factors – 11 Logs
• Kubernetes and the Twelve Factors – 12 Admin Processes
• Summary

Chapter 4. REST Services

• Many Flavors of Services
• Understanding REST
• Principles of RESTful Services
• REST Example – Create
• REST Example – Retrieve
• REST Example – Update
• REST Example – Delete
• REST Example – Client Generated ID
• SOAP Equivalent Examples
• REST Example – JSON
• Famous RESTful Services
• Additional Resources
• What is gRPC?
• Protocol Buffers
• REST vs. gRPC
• Protobuf vs. JSONHTTP/2 vs. HTTP 1.1
• HTTP/2 vs. HTTP 1.1 (Contd.)
• Messages vs. Resources and Verbs
• Streaming vs. Request-Response
• Strong Typing vs. Serialization
• Web Browser Support
• REST vs. gRPC – In a Nutshell
• Summary

Chapter 5. Microservices with Node.js

• What is Node.js?
• Node’s Value Proposition
• Example of a Node.js App: a Simple Web Server
• Node.js Project Types
• Managing Large Applications
• Core Modules
• Why Node.js uses JavaScript?
• The Traditional Concurrency Support Model
• Disadvantages of the Traditional Approach
• Event-Driven, Non-Blocking I/O
• The Success Callback Function
• Using Node Package Manager (NPM)
• NPM Registry (Repository)
• NPM Enterprise
• Package Life-Cycle Management
• Local and Global Package Installation Options
• Listing and Using Module Versions
• The Express Package
• Installing and Using Express
• Defining Routing Rules in Express
• Route Path
• The Response Object
• A Simple Web Service with Express ExampleThe MEAN Stack
• Summary

Chapter 6. Introduction to Spring Boot for Non-Java Developers

• What is Spring Boot?
• Spring Boot Main Features
• Spring Boot vs DropWizard
• Spring Boot on the PaaS
• Understanding Java Annotations
• Spring MVC Annotations
• Example of Spring MVC-based RESTful Web Service
• Spring Booting Your RESTful Web Service
• Spring Boot Skeletal Application Example
• Converting a Spring Boot Application to a WAR File
• Summary

Chapter 7. Spring REST Services

• Many Flavors of Services
• Understanding REST
• RESTful Services
• REST Resource Examples
• REST vs SOAP
• REST Services With Spring MVC
• Spring MVC @RequestMapping with REST
• Working With the Request Body and Response Body
• @RestController AnnotationImplementing JAX-RS Services and Spring
• JAX-RS Annotations
• Java Clients Using RestTemplate
• RestTemplate Methods
• Summary

Chapter 8. Spring Security

• Securing Web Applications with Spring Security 3.0
• Spring Security 3.0
• Authentication and Authorization
• Programmatic v Declarative Security
• Getting Spring Security Gradle or Maven
• Spring Security Configuration
• Spring Security Configuration Example
• Authentication Manager
• Using Database User Authentication
• LDAP Authentication
• What is Security Assertion Markup Language (SAML)?
• What is a SAML Provider?
• Spring SAML2.0 Web SSO Authentication
• Setting Up an SSO Provider
• Adding SAML Dependencies to a Project
• Dealing with the State
• How Can I Maintain State?
• SAML vs. OAuth2
• OAuth2 Overview
• OAuth – Facebook Sample Flow
• OAuth Versions
• OAuth2 Components
• OAuth2 – End Points
• OAuth2 – Tokens
• OAuth – Grants
• Authenticating Against an OAuth2 API
• OAuth2 using Spring Boot – Dependencies
• OAuth2 using Spring Boot – application.yml
• OAuth2 using Spring Boot – Main Class
• OAuth2 using Spring Boot – SPA Client
• JSON Web Tokens
• JSON Web Token Architecture
• How JWT Works
• JWT Header
• JWT PayloadJWT Example Payload
• JWT Example Signature
• How JWT Tokens are Used
• Adding JWT to HTTP Header
• How The Server Makes Use of JWT TokensWhat are “Scopes”?
• JWT with Spring Boot – Dependencies
• JWT with Spring Boot – Main Class
• Summary

Chapter 9. AWS Lambda

• What is AWS Lambda?
• Supported Languages
• Getting Your Code Up And Running in Lambda
• Examples of the Base Lambda Function
• Use Cases
• How It Works
• Example: Processing S3 Source Events with Lambda
• The Programming Model
• Configuring Lambda Functions
• Configure Triggers Page
• Lambda Function Blueprints
• How Do I Troubleshoot and Monitor My Lambda Functions?
• Developing Lambda in Java
• Summary

Chapter 10. Consuming REST Services from a Client

• Accessing REST Services using jQuery – GET Example
• Accessing REST Services using jQuery – GET Example (Contd.)
• Accessing REST Services using jQuery – POST Example
• Accessing REST Services in React – Component
• Accessing REST Services in React – componentDidMount
• Accessing REST Services in React – render
• Accessing REST Services in React – POST Method
• The Angular HTTP Client
• Using The HTTP Client – Overview
• Importing HttpClientModule
• Simple Example
• Service Using HttpClient
• ES6 Import Statements
• Making a GET Request
• What does an Observable Object do?
• Using the Service in a Component
• The PeopleService Client Component
• Error Handling
• Making a POST Request
• Making a PUT Request
• Making a DELETE Request
• Summary

Chapter 11. Docker Introduction

• What is Docker
• Where Can I Run Docker?
• Installing Docker Container Engine
• Docker Machine
• Docker and Containerization on Linux
• Linux Kernel Features: cgroups and namespaces
• The Docker-Linux Kernel Interfaces
• Docker Containers vs Traditional Virtualization
• Docker Integration
• Docker Services
• Docker Application Container Public Repository
• Competing Systems
• Docker Command Line
• Starting, Inspecting, and Stopping Docker Containers
• Docker Volume
• Dockerfile
• Docker Compose
• Using Docker Compose
• Dissecting docker-compose.yml
• Specifying services
• Dependencies between containers
• Injecting Environment Variables
• runC Overview
• runC Features
• Using runC
• Running a Container using runC
• Summary
• Chapter 12. Introduction to Kubernetes
• What is Kubernetes
• What is a Container
• Container – Uses
• Container – ProsContainer – Cons
• Composition of a Container
• Control Groups
• Namespaces
• Union Filesystems
• Popular Containerization Software
• Microservices
• Microservices and Containers / Clusters
• Microservices and Orchestration
• Microservices and Infrastructure-as-Code
• Kubernetes Container Networking
• Kubernetes Networking Options
• Kubernetes Networking – Balanced Design
• Summary

Chapter 13. CI/CD with OpenShift, Jenkins, and Blue Ocean

• What is OpenShift
• OpenShift Online
• OpenShift Origin
• OpenShift Architecture
• OpenShift Origin Installation
• OpenShift CLI
• OpenShift CLI (Contd.)
• Jenkins Continuous Integration
• Jenkins Features
• Running Jenkins
• Downloading and Installing Jenkins
• Running Jenkins as a Stand-Alone Application
• Running Jenkins on an Application Server
• Installing Jenkins as a Windows Service
• Different types of Jenkins job
• Configuring Source Code Management(SCM)
• Working with Subversion
• Working with Subversion (cont’d)
• Working with Git
• Build Triggers
• Schedule Build Jobs
• Polling the SCM
• Maven Build Steps
• Jenkins / OpenShift Pipeline
• Jenkins / OpenShift Pipeline Output
• Installing Jenkins Plugins
• The Blue Ocean Plugin
• Blue Ocean Plugin Features
• New modern user experience
• Advanced Pipeline visualizations with built-in failure diagnosis
• Branch and Pull Request awareness
• Personalized View
• OpenShift Pipeline Output
• Creating OpenShift Blue Ocean Pipeline
• Summary

Chapter 14. Leading Practices for Microservice Logging

• Logging Challenges
• Leading Practices
• Correlate Requests with a Unique ID
• Include a Unique ID in the Response
• Send Logs to a Central Location
• Structure Your Log Data
• Add Context to Every Record
• Examples of Content
• Write Logs to Local Storage
• Collecting Logs with Fluentd
• Leading Practices for Microservice Logging Summary
• Metrics Using Prometheus
• Overview
• Prometheus
• Prometheus Architecture
• Service Discovery
• File-based Service Discovery
• Istio and Prometheus
• Exposing Metrics in Services
• Querying in Prometheus
• Grafana
• Business Metrics
• Metrics Using Prometheus Summary
• Tracing Using Jaeger
• OpenTracing
• Jaeger
• Jaeger Architecture Diagram
• Jaeger Client Libraries
• Jaeger Sampling
• Jaeger Agent
• Jaeger Collector
• Query and Ingester Services
• Jaeger UI Example
• Jaeger and Prometheus
• Jaeger and Istio
• Tracing Using Jaeger
• Summary

Chapter 15. Traffic Routing Patterns

• Edge Proxy Server
• Request Handling
• Filters
• Filter Architecture
• API Gateway for Routing Requests
• API Gateway for Routing Requests (Contd.)
• API Gateway – Example
• Rate Limiting
• Rate Limiting – Business Cases
• Configuring Rate Limiting in NGINX
• Circuit Breaker
• Design Principles
• Design Principles (continued)
• Cascading Failures
• Bulkhead Pattern
• Circuit Breaker Pattern
• Thread Pooling
• Request Caching
• Request Collapsing
• Fail-Fast
• Fallback
• Circuit Breaker Solutions
• Load Balancing in Microservices
• Server-side load balance
• Client-side Load Balance
• Architecture
• Service Mesh
• Service Mesh (Contd.)
• Service Mesh Solutions
• Content Delivery Network (CDN)
• How does a CDN Work?
• Benefits of using a CDN
• CDN Solutions
• Summary

Lab Exercises

Lab 1. Monolith vs Microservices Design
Lab 2. Getting Started With Node.js
Lab 3. Getting Started with Spring Boot
Lab 4. Enable Basic Security
Lab 5. Using AWS Lambda
Lab 6. Getting Started with Docker
Lab 7. Getting Started with Docker Compose
Lab 8. Getting Started with Kubernetes
Lab 9. CI/CD with Jenkins, Docker, and OpenShift