Java and Microservices | Microservices Design & Ecosystem, REST API, JAXRS & More

Session: Microservices Overview

Lesson: Monolithic Versus Micro

• Trend to reduce the monolithic nature of applications
• Explain the principles and characteristics of microservices
• Recognize both good and poor candidates for microservices

Lesson: Supporting and Managing Microservices

• Scaling Microservices
• Microservices Components
• Circuit-Breakers
• Load Management
• Provisioning
• Cloud Services

Lesson: Designing Microservices

• Microservice Boundaries
• Size of Deployable Unit
• Communication Patterns
• Microservice endpoints
• Data Stores and Transaction Boundaries
• Challenges with Microservices

Session: Working with REST

Lesson: Overview of REST

• REpresentational State Transfer
• REST Characteristics
• REST Elements
• REST Architectural Principles
• REST and HTTP
• REST/HTTP: Representation-Oriented
• REST Design Principles

Lesson: Designing RESTful Services

• Effectively Designing RESTful Services
• Best Practices for Endpoint Definition
• Using Query Parameters
• Working with HTTP GET and DELETE
• Working with HTTP PUT
• Working with HTTP POST
• Best Practices for HTTP Methods
• Handling Additional Operations

Session: JAX-RS

Lesson: Introduction to JAX-RS

• Understand some of the features of the JAX-RS framework
• Be familiar with process for implementing RESTful services
• Be able to develop and deploy a simple REST service
• How JAXB supports XML interoperability
• How to use JAXB with JAX-RS

Lesson: @Path: URI Matching

• JAX-RS mechanisms for mapping URIs to resource
• How to use @Path expressions to map URIs
• How to use @Path expressions to extract values from URIs

Lesson: JAX-RS Content Negotiation

• JAX-RS built-in content handler
• How to inject content handlers into service
• Basics of working with JSO
• Capabilities for HTTP content negotiation
• JAX-RS mechanisms for supporting content negotiation

Lesson: JAX-RS Request and Response

• How information about the request can be injected into the resource
• The different injection targets of the resource
• How to build a ‘complex’ response
• How to respond to a HTTP POST
• The JAX-RS exception hierarchy
• How exceptions can be mapped to response codes

Lesson: JAX-RS Client API

• Be able to invoke a JAX-RS service using the client API
• Understand the purpose of the WebTarget object
• Be able to dynamically resolve path template values
• Understand some of the return codes
• Be able to filter client request and server responses

Lesson: JAX-RS Filters and Interceptors

• Understand the purpose of JAX-RS filters
• Be able to develop interceptors
• Be able to define global filters and interceptors
• Dynamically add interceptors and filters
• Understand NameBinding

Lesson: Asynchronous JAX-RS

• Be able to make asynchronous requests
• Develop resources to process request asynchronously

Session: The Microservices Ecosystem

Lesson: Working with Microservices

• Typical Microservices Stack
• Monitoring Microservices
• Logging
• Containerizing with Docker
• Deploying into Docker
• Orchestration of Microservices

Lesson: Microservice Best Practices

• Motivation and Mindset
• Minimum Viable Product
• Challenges of Data and Data Islands
• Spring Data and Microservices
• PrePersist, PreUpdate, and Repository Interface
• A DevOps-Style Microservice Life Cycle
• Continuous Delivery Pipeline
• Governance
• Tracking APIs and API Consumers

Lesson: Microservice Patterns

• Aggregator Pattern
• Branch Pattern
• Proxy Pattern
• Chained Pattern
• Shared Resources (Data) as a Pattern
• Asynchronous Messaging Pattern
• Circuit Breaker/Bulkhead Isolation Pattern
• Continuous Integration/Delivery Pattern

Lesson: Microservice Anti-Patterns and Challenges

• Shared Resources as an Anti-Pattern
• Microservice Costs
• When to Apply and NOT Apply
• Data island’s
• Dependency management
• Cohesion Creep
• Avoiding Versioning
• Continuous Integration/Delivery Anti-Pattern

Time Permitting:

Overview of OAuth and OpenID

• OAuth 2.0 Terminology and Concepts
• Usage Models
• OAuth 2.0 Tokens
• OpenID Connect Overview
• OpenID Providers
• Spring OAuth2 Project

This “skills-centric” course is about 50% hands-on lab and 50% lecture, designed to train attendees in core RESTful development skills, coupling the most current, effective techniques with the soundest industry practices. Working within in a hands-on learning environment, guided by our expert team, attendees will learn to:

• Understand the why and how of basic microservices
• Understand the relationships between microservices and SOA, SOAP services, and other recent initiatives.
• Understand the steps involved in the development of Microservices
• Examine the ecosystem that surrounds and supports microservices, including a typical stack, monitoring, logging, containerizing, deploying and orchestrating microservices
• Work with implemented microservices to package, deploy, and manage them.
• Understand and work with the Cloud to scale microservices
• Containerize microservices using Docker
• Recognize and use best practices relative to designing and working with microservices
• Understand and apply the basic concepts of REST
• Understand and intelligently discuss the similarities and differences between RESTful services and SOAP-based services
• Appreciate the security concerns associated with RESTful services
• Design, develop, and deploy real-world RESTful Services
• Implement RESTful services using JAX-RS to
• Implement RESTful Java clients
• Implement JAX-RS Filters and Interceptors
• Design and implement asynchronous JAX-RS processing
• If time permits, there is also coverage of OAuth and OpenID

This hands-on course focuses on ‘learning by doing’, combining expert lecture, practical demonstrations and group discussions with plenty of machine-based real-world programming labs and exercises. Student machines are required.

Developers, Architects, Engineers, Technical Managers.