Sinatra + Heroku
Comfortable ruby way for web service

Rails or not rails
it’s a question

• Rails is a full stack, web application
framework
• A MVC framework
• DRY - Do not repeat yourself
• Convention over configuration

Rails !"#$
Components help you
as well as trouble you
M
V C

Someone wants simpler
and faster
How can you know that, if the code is not written by yourself?
• Merb: no code is faster than no code [merge
with rails]
• Sinatra is a simple DSL which has minimum
code
• Some other names: camping,ramaze,waves..

Why talk about Sinatra
today?

Cause it is simple,
popular and heroku
developer like it

Sinatra app looks like...
Choose dbms
ruby model
catch
request
provide
response

Linux system Reverse
setup proxy
Say goodbye to
environment setup
Web server
scaling
configuration

Just throw it up to
heroku

• write a config.ru file: require "blog.rb"
run Sinatra::Application
• git init
• git add .
• git commit -m “whatever you want to mark”
• sudo gem install heroku
• heroku create your-app-name
• git push heroku master

Why heroku?

• Easy deploy
• A free plan for demo
• Easy scaling
• Use your domain name freely
• Customization for ruby
• GAE is native for python and support java

How heroku performs?

A benchmarking...
against free plan

ab -n 100 -c 10 http://msg.dazhe.me/
A simple blog system
Concurrency Level: 10
Time taken for tests: 8.738 seconds
Complete requests: 100
Requests per second: 11.44 [#/sec] (mean)
Time per request: 873.761 [ms] (mean)
Time per request: 87.376 [ms]

Some experience
and tips

• Google Map API need a domain name
• loc2ip.dazhe.me
• heroku create your-app-name
• The auto-generated name with mass you
mind in no time
• A credit card is needed for enable the
customized domain function
• not reasonable because it is free

• Add gems? rspec --version 1.2.7
radiant --version 0.7.1
• write a .gems file
• Use other DB servers
• 5M space is not big enough

• References
• docs.heroku.com
• www.sinatrarb.com
• Lightweight Webservices with Sinatra and
RestClient: http://u.dazhe.me/6

Deep Blue
www.footalk.com
opencv@gmail.com