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!
| Framework | Requests Per Sec | Avg. Resp. Time |
|---|---|---|
| Kemal(Production) | 100238 | 395.44μs |
| Sinatra(Puma) | 2274 | 43.82ms |
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| Framework | CPU (%) | Memory (MB) |
|---|---|---|
| Crystal(Kemal) | 1.85 | 11.2 |
| ws (Node) | 38.95 | 906.3 |
Built-in WebSocket
Did i mention that it's super fast and efficient :)
ws "/socket" do |socket|
socket.send "Hello from Kemal!"
endDemo
Who uses Kemal
Crystal for Rubyists
http://www.crystalforrubyists.com
Questions?
Thanks!
@sdogruyol
https://slides.com/sdogruyol/building-web-apps-with-kemal