The document discusses proposed enhancements to Java EE to better support cloud and microservices development. Key points include: - Extending Java EE programming models for reactive programming, events, and JSON processing. - Packaging applications as containers and serverless services. - Adding APIs for external configuration, state management, and key-value data stores. - Improving resiliency with circuit breakers and health reporting. - The proposals aim to make Java EE simpler, more agile and scalable for modern app development styles.

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Java EE, What’s Next?
Anil Gaur
GVP Engineering
Oracle Cloud Platform
Application Development

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AppDev is About our Customer’s Entire Portfolio
2
Innovation Software - Find the Next Business
Differentiation Software - Run Current Business
Core Software - Keep the Lights On
Release Hourly
Fail Early
Agile
Business-centric
Top Line Growth
Bespoke Software
Product-based
Release Quarterly
Fail Late
Waterfall
IT-centric
Bottom Line Savings
Packaged Software
Project-based
Copyright © 2016, Oracle and/or its affiliates. All rights reserved.

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Enterprise Application Development Is Changing
3

4. Rapid Changes Over Past Few Years
4
Microservices
Apps divided into many small pieces
Distributed Computing
Many data centers, AZs, regions, etc.
Polyglot
Java leads but use of others increasing
New Technology
Docker, Cloud, DevOps, etc.
Driven by increasing business needs

5. How Do We Make This
Easier?
5

6. Confidential – Oracle
6
Building on the Lessons Learned
12/4/2016 6Copyright © 2016, Oracle and/or its affiliates. All rights reserved.
Use lessons
learned and
successful
implementations
JAX-RS
Servlet
Interceptors
JMS
JSON-PCDI
JTA JPA
WebSocket
Compatible
Application Servers
Be pragmatic

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Java EE APIs - Backbone of Leading Open Source Projects
7
Java EE
Containers
Microservices Web
Containers
Web
Frameworks
PaaSREST

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Cloud Development
Heterogeneous Clients
• Mobile, REST, HTML5
Stateless Services
• Managed and scaled
independently
Data Sources
• Relational, non-relational
User profile
service
Order
service
Partner
service
Catalog
service
Notificatio
n service
Import
service
HTTP/2 REST JSON XML/HTTP
Event JAX-RS/JSON Notifications JAX-WS
RDBMS NoSQL DB XML DBData Streams
Key ValueEventsKey ValueJDBC
8

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It’s Confusing!
Too many choices....
Which components?
Overall architecture?
Standards?
Vendor commitment?

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Proposed Enhancements for Java Enterprise Edition
• New AppDev style for Cloud and
Microservices
• Build on proven technologies
• Comprehensive
– Programming Model, Packaging,
Portability
• Standards-based
– This is a proposal only
– Will work with the community and
follow the JCP process
10

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Designed for Agility and Scalability with Security
• Programming model
– Extend for reactive programming
– Unified event model, event messaging API
– JAX-RS, HTTP/2, Lambda, JSON-B, …
• Eventual consistency
– Automatically event out changes to observed data structures
• Key value/document store
– Persistence and query interface for Key Value and Document DB
• Security
– Secret management
– OAuth/OpenID support
11
App
App
App
App

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Location Transparency and Resiliency
• Configuration
– Separate service packaging and configuration
– API for external configuration
• State
– API for external state
• Resiliency
– Circuit breakers
– Resilient commands
– Standardized health reporting
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Reliability, Monitoring
Container Management
Scheduling & Elastic Scaling
Key Value
Database
Logging
Config
State
Security
Notification
User profile
service
Order
service
Catalog
service

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Packaging for Simplicity
• Packaging – Docker model
– Package applications, runtimes into containers
– Separate service package and configuration
– Standalone immutable executable binary
– Multi-artifact archives, leveraging Java 9
• Serverless
– New spec – interfaces, packaging format, manifest
– Ephemeral instantiation
• Multitenancy
– Increased density
– Tenant-aware routing and deployment
13
App
Server
Order
service
App
Server
Catalog
service
App
Server
User profile
service

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Platform Architecture
Orchestration – Deployment, Scheduling, and Standup
BareMetal
Orchestration
Deployment
Manager
Local Service Impls
Additional Local Classfiles
Java EE
Cloud Native App
Container
Container
Container
Java EE
Cloud Native App
JLink
Local Service Impls
Additional Local Classfiles
Java EE
Cloud Native App
With Just Enough
Container
Container
Container
Java EE
Cloud Native App

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Platform Architecture
Orchestration – Inspection, Injection, and Wiring
BareMetal
Orchestration
Container
Config
Cache
Logging
Platform Services
Service
Registry
Java EE
Cloud Native App
Java EE Cloud Native App
@Config
@Cache
@Logging
@Service Name
Impl
Impl
Impl
Impl

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Recent Java EE 7 compatibility updates: Congratulations!Technical Focus Areas
 Extend for reactive
programming
 Unified event model
 Event messaging API
 JAX-RS, HTTP/2,
Lambda, JSON-B, ...
Programming Model
 API to store
externalized state
State
 Automatically event out
changes to observed
data structures
Eventual Consistency
 Extension to support
client-side circuit
breakers
 Resilient commands
 Standardize on client-
side format for
reporting health
Resiliency
 New spec – interfaces,
packaging format,
manifest
 Ephemeral
instantiation
Serverless
 Secret management
 OAuth
 OpenID
Security Package applications,
runtimes into services
 Standalone immutable
executable binary
 Multi-artifact archives
Packaging
 Increased density
 Tenant-aware routing
and deployment
Multitenancy
 Externalize
configuration
 Unified API for
accessing configuration
Configuration
 Persistence and query
interface for key value
and document DB
Key Value/Doc Store
16

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Proposed Platform Architecture
Java EE Packaging, Serverless, Multitenancy
OS / Hypervisor
Container Runtime
Java SE Runtime
Java EE Runtime
Programming Model
API Gateway
Load Balancer
HTTP/2
JSON-B
Event API
REST API
Security API State API Config API
Eventual
Consistency
Resiliency
Key Value
Store API
17
Key Value
Database
Logging
Config
State
Security
Notification
Reliability,Monitoring
ManagementandOrchestration
SchedulingandElasticScaling

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Java EE 7
Connector JAXBJSP Debugging
Managed BeansJSPConcurrency EE Interceptors JAX-WS WebSocket
Bean Validation JASPIC ServletJMS JTADeployment
Batch JACCDependency
Injection JAXR JSTL Management
CDI EJB JAX-RPC Web ServicesJSF JPA
JSON-PCommon
Annotations EL JAX-RS Web Services
MetadataJavaMail

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Java EE 8 (Revised Proposal, 2016)
Connector JAXBJSP Debugging
Managed BeansJSPConcurrency EE Interceptors JAX-WS WebSocket
Bean Validation JASPIC ServletJMS JTADeployment
Batch JACCDependency
Injection JAXR JSTL Management
CDI EJB JAX-RPC Web ServicesJSF JPA
Common
Annotations EL JAX-RS Web Services
MetadataJavaMail
CDI
JSON-B Security
Bean Validation
JSF
JAX-RS JSON-P
Servlet
JSP

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Engage Java EE Community
• Feedback through Survey
• Launch Java EE Next JSRs
2016
Java EE 8
• Specs, RI, TCK complete
• Initial microservices support
• Define Java EE 9
• Early access implementation
of Java EE 9
Java EE 9
• Specs, RI, TCK complete
• Modular Java EE runtime
• Enhanced microservices
support
Java EE Roadmap
2017
2018

21. Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
Java EE, What’s Next?
Anil Gaur
GVP Engineering
Oracle Cloud Platform
Application Development