Java on HerokuDeploying and Scaling on the Cloud

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Safe Harbor StatementSafe Harbor Statement

Cloud Application

Trendscontinuous delivery

Continuous Delivery

“..reducing the cycle time between an idea and usable software”

- Martin Fowler

“Software delivers no revenue until it is in the hands of its users.”

-Jez Humble

“.. leads to deeper relationship between IT, their business customer, and their final customers.”

-Jez Humble

In-frequent Releases

Dev-Production Parity

Deploying Manually

Anti-Patterns

Monolithic > Micro apps

JVM

App Server Core

Session Managers

M&M

Web App -1

EJBs

Clustering

Message Listeners

MDBsScheduled Jobs

Web App -2

Slower Releases

-

Single Language

-

Memory footprint-

“noisy” neighbour

-

Monolithic > Micro apps

JVM / Container

Web App 1

JVM / Container

Web App 2

JVM / Container

MessageDriven apps

JVM / Container

BatchJobs

Cloud Services

Faster Releases

+

Isolation+

Small Optimized Apps

+

Composite Apps+

Scale independently

+

Polyglot Architecture

+

Cloud icon – courtesy from The Noun Project collection

Presentation Tier(JSP, JSF, Struts)

Business Logic Tier(Java)

Data TierRDBMS

One language > Polyglot

No one size fits all-Lower productivity-

Presentation Tier(JSP, JSF,, Struts)

Business Logic Tier(Java)

Data Tier(RDBMS)

Presentation Tier(Rails, HTML5..)

Business Logic Tier(Java, Scala, NodeJS)

Data TierRDBMS, NoSQL

One platform > Polyglot

Productivity+

Performance+

Language strengths

+

Application UIs > APIs

Application UI(Browser)

Data Tier

Business Logic

SOAP-Single Viewport

-

Stateful apps-

Application UI > APIs

Application UI(Browser)

Data Tier

Business Logic

Application UI

(Browser)

Data Tier

Business Logic API

Mobile / Tablets

(Java,iOS)

Devices

JSON+

Stateless apps

+

Multi-Device+

Monetization+

Stateful > Stateless

App Server

1

App Server

1

App Server

1

Sticky State Load Balancer

Session

Session

Session

No continuous deployment

-Memory footprint-

Less elastic-

Stateful > Stateless

Continuous Deployment+

Lower memory footprint

+

App App App

Load Balancer

App Server

1

App Server

1

App Server

1

Sticky State Load Balancer

Session

Session

Session

Distributed Cache

Elastic Scale+

App Server > Applications

HTTPContainer

Dev / Production Parity-Complex packaging / deployment

-

App Server > Applications

HTTPComponent

simplified packaging & deployment

+

Simplified application start

+

Dev / Prod parity & Environments

+

Environment

Config > Environments

Resource Configuration

Application Code

JVM PropertyJNDI Property

Multiple build artifacts by envDatasources

Config > Environments

App

DB_URL=jdbc://.. /DBDev

Environment Variable:

DB_URL=jdbc://postgres….

App will access the URL with:

System.getenv(“DB_URL”)

SFDC_OAUTH=DEV

Dev, Prod

Resource Configuration

Application Code

JVM PropertyJNDI Property

Multiple build artifacts by envDatasources

Mdlwr > Cloud Services

Application Code

Email Services

Databases

Databases

Infrastructure not innovation

-Maintenance overheads-

Productivity-

Mdlwr > Cloud Services

Application Code

Email Services

Databases

Databases

App

Dev, Prod

Send GridDB_URL

PubNubPUB_URL..

Papertrail..URL..

Focus on innovation+

Rapid prototyping+

Lower maintenance overheads

+

INTRO TO HEROKU

Building Cloud Apps

IaaS Reduces Costs

Software Infrastructu

re(Slow)

Hardware Infrastructu

re (Expensiv

e)

Your Apps

Traditional On-Premise

Development

Infrastructure as a Service

Software Stack Software Stack

Increase server utilization

Reduce server costs

Ease server administration

Mobile Server

Web Server

App Server

Hyper V Server

Security Server

Operating System

Mobile Server

Web Server

App Server

Hyper V Server

Security Server

Operating System

Still have stack management

Software Infrastructu

re(Slow)

Hardware Infrastructu

re (Expensiv

e)

Your Apps

Infrastructure as a Service

Software Stack

You still manage the software stack

You still upgrade and patch

You still manually scale, tune and back-up

Mobile Server

Web Server

App Server

Hyper V Server

Security Server

Operating System

ForgetServers

Run Anything

SeeEverything

Trust &Manage

Ruby

PHPSpring MVC

NodeJS

GrailsGroovy

Scala

JavaPython

DjangoJavaScript

Clojure

Spring Roo

Play !

Hibernate

NoSQL

MongoDB

HTML5

Rails

CometD PerlApex

SOQL

Run anything

pol·y·glot [pol-ee-glot]

adjective1. able to speak or write several languages; multilingual.2. containing, composed of, or written in several languages: a polyglot Bible.

Run anything

Elastic Load balancing

Dyno manifold

Forget Servers

Dyno manifold

• Virtualized Linux containers (LxC)

• Dynos are fully isolated from each other

• Erosion resistant

Trust & Manage

Dyno manifold

Logplex

• Real time stream of all your application events

• Consumable by 3rd party services or syslog drains

Logplex

See Everything

Elastic Load balancing

Dyno manifold

API

• Process status

• Manage your processes

• Scale up or down your apps

Clients:• CLI• Eclipse

plugin• Apps

Logplex

See Everything

Contr

ol Surf

ace

API

Elastic Load balancing

Dyno manifold

Addons

• Extend the Platform

• Pre-Installed Services

• Common Components Logplex

Contr

ol Surf

ace

API

Addons

Elastic Load balancing

Micro apps Web app, API service

Cloud Services PubNub, Papertrail

Environments Salesforce Oauth

Stateless Distributed sessions w/Memcache

Containerless Webapp-runner

Trend You will be building

12 Factor Apphttp://www.12factor.net