Why bother with best practices?

We set industry standards others should follow!

Getting features for free

• geographic distribution
• automated peak load scaling
• pay for what you use ($0)
• availability
• performance
• tools

Changes to computer thinking

Stephen Fry explains cloud computing

What can we do?

Design your apps so that they COULD run in the cloud.

Java Web Application Hosting

in the cloud

• Heroku
• OpenShift
• Jelastic
• G App Engine
• Cloud Foundry
• cloud of clouds

BUT BUT BUT

We have existing deal with other hardware vendor and NO ONE can provide same services.

Correct

Other vendors can provide other services.

What else can we do?

Reduce the cost of changing vendor

Make first revolutionary step

Accept existence of the Internet.

Scenario to consider

Integration based on HTTP WS, but working only when physical servers are in the same room. Loosely coupled?

Project details

• Fixed date, fixed scope, 1/2 developer
• Requirements: has to work as it used to but through WS
• Legendary quality

GO!

SpagUtil.findFlightNumbers(query) -> https://ttm.sabre.com/flights?filter=q
SpagUtil.flightDetails(number)    -> https://ttm.sabre.com/flights/lh4234
						

n+1 anti-pattern, MOS read timeouts, throttling

Chill out, take a deep breath

Web service should serve its purpose over the Web.

Minimize RTT since it can be on the other side of the world

Internet based infrastructure supports moving pieces between cloud vendors.

Think about the future

One day your application may need to be moved somewhere else

• CMO
• FSE
• FSE Gen2
• VM
• [...]
• Private cloud
• Public cloud
• Cloud of clouds

You are not alone

Best practices come with aid - follow standards.

• JSR-315, Servlet 3.0
• RFC 2616, Hypertext Transfer Protocol
• DAO layer, JDBC and JPA
• HTML and CSS

Decouple anything nonstandard: native/OS calls, JNI

I have fat client architecture T.T

Is there a hope for those who deny existence of the Internet?

Question everything

Think outside the box.

• What functionalities could be exposed over the web?
• What functionalities would be used on mobile devices?
• Are there any hardware/CPU intensive operations?

Ask intern/new hire to implement it.

JS processing power

Modern browsers compete in performance.

Maybe 1 gigaFLOPS is enough for client side computing and rest can be done on server side.

Current megaFLOPS=