Selecting the Right Cloud Host

Selecting the Right Cloud Hosting for Your WebSite

Agenda
Goal of server-side architecture exploration
Traditional single-write and multiple-read DB architecture
Cloud Approach
Comparison of cloud providers
Suggested Architecture
Cost
References

Our Goal: Design a flexible and scalable architecture

Option 1: Traditional Multiple App and DB Read Instances Auto Scaling Performance Fail-over Geographical Fail-over Maintenance Cost and Set-up Backups Multiple Read Instances Self setup DB w/ multiple reads No High No No Very High Yes Yes

Option 2: Cloud Approach and separate out App and DB layer

Application Cloud Options Performance Load Balancer Auto Scaling Geographical Fail-over Maintenance Cost and Set-up Provider Profile EC2 instances (recommend) High Yes Yes Yes (set one instance in East and West coast) Medium High Strong Heroku High Internal Handling No No Low BlueBox High Yes Yes No Low Low Internal Handling No No Low Medium

Database Cloud Auto Scaling Performance Fail-over Geographical Fail-over Maintenance Cost and Set-up Backups Master-Master Network Latency Multiple Reads Instances Provider Profile Amazon RDS (Cloud DB) No Medium-high Yes No High Yes but weekly down time No ~500ms per transaction Manual Strong XeRound (Cloud DB) Yes High Yes Yes Low Yes Yes ~500 ms per transaction Yes Medium Heruko No High Yes No Low Yes No Low No Medium Self setup DB w/ multiple reads No High No No High Yes Yes (limited to 2 instances) Not Recommended None Yes Strong

Suggested Architecture: Two (or more) Geographically spread EC2 instances for Application layer with Xeround for Database Layer

More Reasons ..
Xeround Database
Non-dependent on EC2 (uses RackSpace and other cloud platforms as well alongside EC2)
Survived EC2 Ireland outage in Sep-2011
Automatic backups, scalability
ZERO scheduled outages

EC2 Hosted Application Layer
2 load-balanced servers can take on *50+ tps load
Easy to add a new instance manually (in ~1 hour)
*Calculated based on detailed load testing

Cost of this infrastructure
Some detailed cost estimations are present for a messaging system we delivered at the following link:
http://bit.ly/server_cost_est

References
http://xeround.com/cloud-database-comparison/ec2-mysql/
http://www.williambharding.com/blog/rails/ec2-vs-heroku-vs-blue-box-group-for-rails-hosting/

http://heroku.com
http://aws.amazon.com/elasticloadbalancing/

Selecting the Right Cloud Host

by asaleem81 on Oct 06, 2011

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Selecting the Right Cloud Host — Presentation Transcript