Scalable Java Application Development on AWS

Scalable Java Application Development on AWS
Mikalai Alimenkou
http://xpinjection.com
21.05.2011

Background
Java Technical Lead/Scrum Master at Zoral Labs
6+ years in software development
4+ years of working by Agile methodologies
Expert in Agile engineering practices
Founder and coachat XP Injection (http://xpinjection.com)
Organizer of Selenium Camp and JEEConf conferences

No
Future!

Cloud Computing
Scalecapacityondemand
Turnfixedcostsintovariablecosts
CleanAPIsandconceptualmodels
Alwaysavailable
Cost-effective
Reducedtimetomarket
Focusonproduct

Interesting startup
Completely in Java
Customer wants to use AWS
New Project Arrived

AWS Structure

Why Java?
Runs everywhere
Full technological stack
Lots of tools for scalability
Many frameworks for cloud development

EC2 Quick Introduction

Everything on AWS
Infrastructure
Testing
Staging
Production
Monitoring

Easy and reliable server configuration with AMI
No work for system administrator
Any number of servers available
No waits for hardware
More experimenting and testing
Easy security model
Happiness…

Look Ma, No Hands!

What about money?

EC2 Charging Model

What I Have for Such Money?
Testing Server
DB Server
Production Server

Ways to Save Money
Good and responsible team 
Reuse instances when possible rounding usage time
Release instances when not more needed
Monitor and control running instances
Use reserved instances for continuously running jobs

EC2 Physical Distribution

Elasticfox – my superhero!

Hourly payment is invisible
Instances are virtual
Same type of machine, but different performance
Instance not immediately available
Images creation require “magical” skills
No multicast messaging

Retry policies everywhere
Timeouts for all operations
Automatic recovery
Everything is Unreliable

EBS Quick Introduction
Raw data volumes from 1GB to 1TB
Replicated automatically
Snapshots to S3
May be used with different instances

EBS Architecture

EBS Fault Tolerance

EBS Cost Model
Not so cheap
Additional costs for snapshots in S3

EBS != Hard Drive
Slow for time critical tasks
Bottleneck for Lucene indexing and DB
Use parallel EBS volumes
Separate data storage between EC2 instances
Don’t use RDS
Limited to 1TB
Virtual RAID
Data distribution

S3 Quick Introduction

Load Balancing with JMS
JMS is very scalable and flexible
JMS costs are less than SQS (Simple Queue Service)
Configurable load balancing

Deployment Options

Self-Distributed System
Host manager works via Java AWS API
Centralized deployment with
Code distribution to EC2 hosts

Reduce Coupling to AWS

Conclusions
AWS is great for startups or research projects
AWS increases development speed in times
It is easy to create scalable and highly available Java application on AWS
Development, testing and production may be done on AWS
AWS save development costs
AWS support Agile developmernt approaches

Any questions?

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Scalable Java Application Development on AWS

by Mikalai Alimenkou on May 22, 2011

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Scalable Java Application Development on AWS — Presentation Transcript