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Microservices with Spring Boot and Spring Cloud

( Duration: 4 Days )

Rapid advancements in cloud-based software delivery and virtualization have caused many developers to question the wisdom of a "Big Server" approach to deploying web applications. Spring Boot is a technology stack that builds on the popular Spring Framework to allow Spring-based applications as stand-alone jar files that host their own web servers. This approach works nicely with deployment automation and rapid scaling. Cloud-based, highly-distributed applications face additional challenges in supporting a dynamic environment - especially around configuration, service discovery, service resilience and monitoring. Spring Cloud embraces and extends the popular suite of open source cloud tools published by Netflix (Eureka, Hystrix, Ribbon, etc).

This Microservices with Spring Boot & Spring Cloud training course introduces Spring Boot, Spring Cloud and the Netflix OSS suite as a way of deploying highly resilient and scalable RESTful services and web applications.

By attending Microservices with Spring Boot & Spring Cloud workshop, delegates will learn to:

Create Spring Boot projects
Use databases and JPA in Spring Boot
Create RESTful services with Spring Boot
Deploy services that use Netflix Eureka, Hystrix and Ribbon to create resilient and scalable services

Experience with Java development

COURSE AGENDA

1

Introduction to the Spring Framework

What is the Spring Framework?
Spring Philosophies
Why Spring?
Spring Modules
Requirements and Supported Environments
Using Spring with Servers
Role of Spring Container
Spring Example
Avoiding Dependency on Spring
Additional Spring Projects/Frameworks

2

Spring Annotation Configuration

Spring Containers
Annotation-based Spring Bean Definition
Scanning for Annotation Components
Defining Component Scope Using Annotations
JSR-330 @Named Annotation
JSR-330 @Scope
Annotation-based Dependency Injection
Wiring Bean using @Inject
@Autowired - Constructor
@Autowired - Field
@Autowired - method
@Autowired - Collection
@Autowired - Maps
@Autowired & @Qualifier with Constructors, Fields, and Methods
@Autowired & Custom Qualifiers
@Autowired & Simple Custom Qualifier Field
@Autowired & Simple Custom Qualifier Method
@Autowired & CustomAutowireConfigurer
Dependency Injection Validation
@Resource
@PostConstruct and @PreDestroy

3

Spring Framework Configuration

Java @Configuration Classes
Defining @Configuration Classes
Loading @Configuration Classes
Modularizing @Configuration Classes
Qualifying @Bean Methods
Trouble with Prototype Scope
Configuration with Spring Expression Language
Resolving Text Messages
Spring Property Conversion
Spring Converter Interface
Using Custom Converters
Spring PropertyEditors
Registering Custom PropertyEditors

4

Introduction to Spring Boot

What is Spring Boot?
Spring Boot Main Features
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
Externalized Configuration
Starters
The 'pom.xml' File
Spring Boot Maven Plugin
HOWTO: Create a Spring Boot Application

5

Spring MVC

Spring MVC
Spring Web Modules
Spring MVC Components
DispatcherServlet
Template Engines
Spring Boot MVC Example
Spring MVC Mapping of Requests
Advanced @RequestMapping
Composed Request Mappings
Spring MVC Annotation Controllers
Controller Handler Method Parameters
Controller Handler Method Return Types
View Resolution
Spring Boot Considerations

6

Overview of Spring Boot Database Integration

DAO Support in Spring
Spring Data Access Modules
Spring JDBC Module
Spring ORM Module
DataAccessException
@Repository Annotation
Using DataSources
DAO Templates
DAO Templates and Callbacks
ORM Tool Support in Spring

7

Using Spring with JPA or Hibernate

Spring JPA
Benefits of Using Spring with ORM
Spring @Repository
Using JPA with Spring
Configure Spring Boot JPA EntityManagerFactory
Application JPA Code
"Classic" Spring ORM Usage
Spring JpaTemplate
Spring JpaCallback
JpaTemplate Convenience Features
Spring Boot Considerations
Spring Data JPA Repositories

8

Introduction to MongoDB

MongoDB
MongoDB Features
MongoDB's Logo
Positioning of MongoDB
MongoDB Applications
MongoDB Data Model
MongoDB Limitations
MongoDB Use Cases
MongoDB Query Language (QL)
The CRUD Operations
The
find
Method
The
findOne
Method
A MongoDB QL Example
Data Inserts
MongoDB vs Apache CouchDB

9

Working with Data in MongoDB

Reading Data in MongoDB
The Query Interface
Query Syntax is Driver-Specific
Projections
Query and Projection Operators
MongoDB Query to SQL Select Comparison
Cursors
Cursor Expiration
Writing Data in MongoDB
An Insert Operation Example
The Update Operation
An Update Operation Example
A Remove Operation Example
Limiting Return Data
Data Sorting
Aggregating Data
Aggregation Stages
Accumulators
An Example of an Aggregation Pipe-line
Map-Reduce

10

Spring Data with MongoDB

Why MongoDB?
MongoDB in Spring Boot
Pom.xml
Application Properties
MongoRepository
Custom Query Methods
Supported Query Keywords
Complex Queries
Create JavaBean for Data Type
Using the Repository

11

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 Annotation
Implementing JAX-RS Services and Spring
JAX-RS Annotations
Java Clients Using RestTemplate
RestTemplate Methods

12

Spring Security

Securing Web Applications with Spring Security 3.0
Spring Security 3.0
Authentication and Authorization
Programmatic v Declarative Security
Getting Spring Security from Maven
Spring Security Configuration
Spring Security Configuration Example
Authentication Manager
Using Database User Authentication
LDAP Authentication

13

Spring JMS

Spring JMS
JmsTemplate
Connection and Destination
JmsTemplate Configuration
Transaction Management
Example Transaction Configuration
Producer Example
Consumer Example
Converting Messages
Message Listener Containers
Message-Driven POJO's Async Receiver Example
Message-Driven POJO's Async Receiver Configuration
Spring Boot Considerations

14

Microservices

What is a "Microservice"?
One Helpful Analogy
SOA - Microservices Relationship
ESB - Microservices Relationship
Traditional Monolithic Designs and Their Role
Disadvantages of Monoliths
Moving from a Legacy Monolith
When Moving from a Legacy Monolith
The Driving Forces Behind Microservices
How Can Microservices Help You?
The Microservices Architecture
Utility Microservices at AWS
Microservices Inter-connectivity
The Data Exchange Interoperability Consideration
Managing Microservices
Implementing Microservices
Embedding Databases in Java
Microservice-Oriented Application Frameworks and Platforms

15

Spring Cloud Config

The Spring Cloud Configuration Server
Why Configuration Management is Important
Configuration Management Challenges in Microservices
Separation of Configuration from Code
Configuration Service
How the Configuration Service Works
Cloud Config Server Properties File
Git Integration
Properties
Configuration Client
Sample Client Config File
Sample Client Application
Dynamic Property Updates - Server
Dynamic Property Update - Client
Dynamic Property Update - Execute

16

Service Discovery with Netflix Eureka

Service Discovery in Microservices
Load Balancing in Microservices
Netflix Eureka
Eureka Architecture
Communications in Eureka
Time Lag
Eureka Deployment
Peer Communication Failure between Servers
Eureka Server Configuration
Eureka Client/Service
Eureka Client Properties
Spring Cloud DiscoveryClient Interface
ServiceInstance JSON
ServiceInstance Interface
What about Services
Eureka and the AWS Ecosystem

17

Load-Balancing with Netflix Ribbon

Load Balancing in Microservices
Netflix Ribbon
Server-side load balance
Client-side Load Balance
Architecture
Load Balance Rules
RoundRobinRule
AvailabilityFilteringRule
WeightedResponseTimeRule
RandomRule
ZoneAvoidanceRule
IPing Interface (Failover)
Using Ribbon
YAML Configuration
Configuration Class
Client Class
Client Class Implementation
Integration with Eureka (Service Discovery)
Using Ribbon in the Amazon AWS Cloud

18

Application Hardening with Netflix Hystrix

Netflix Hystrix
Design Principles
Design Principles (continued)
Cascading Failures
Bulkhead Pattern
Circuit Breaker Pattern
Thread Pooling
Request Caching
Request Collapsing
Fail-Fast
Fallback
Using Hystrix
Circuit Breaker Configuration
Fallback Configuration
Collapser Configuration
Rest Controller and Handler
Collapser Service (Part 1)
How the Collapser Works
Hystrix Monitor
Enable Monitoring
Turbine
The Monitor
Monitor details

19

Edge Components with Netflix Zuul

Zuul is the Gatekeeper
Request Handling
Filters
Filter Architecture
Filter Properties
filterType()
filterOrder()
shouldFilter()
Run()
Cancel Request
Dynamic Filter Loading
Filter Communications
Routing with Eureka and Ribbon

20

Distributed Tracing with Zipkin

Zipkin
Zipkin Features
Architecture
The Collector
Storage
API
GUI Console
Zipkin Console Homepage
View a Trace
Trace Details
Dependencies
Dependency Details
Zipkin in Spring Boot
Zipkin Configuration

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