Building Web Applications with

Crystal and Kemal

@sdogruyol

vienna.rb 

09.03.2016

Serdar Doğruyol

Lead Developer - Protel Turkey

@sdogruyol

• Rubyist, Crystal enthusiast
• Ruby Turkey, Crystal Turkey Organizer
• Open source developer
• Literally Polyglot

Why Crystal?

The expressiveness of Ruby 

The superb performance of C 

Actually it's over 90000!

Enter Kemal!

Kemal

http://kemalcr.com

• Super Easy
• Super Fast
• Fully featured :)

• RESTful
• Built-in WebSocket
• JSON
• Static File Serving
• Pluggable Middlewares
• View templating

require "kemal"

get "/" do
  "Hello World!"
end

ws "/socket" do |socket|
  socket.send "Hello from Kemal!"
end

Built-in WebSocket

Did i mention that it's super fast and efficient :)

ws "/socket" do |socket|
  socket.send "Hello from Kemal!"
end

Demo

Who uses Kemal

Crystal for Rubyists

http://www.crystalforrubyists.com

Questions?

Thanks!

@sdogruyol

https://slides.com/sdogruyol/building-web-apps-with-kemal