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Rack for Beginner Cam Huynh @huynhquancam

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Cam Huynh [email protected]

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What’s this talk about? ● WHAT’s Rack and HOW to Rack? ● Is config.ru redundant? ● Rack middlewares. ● Live coding session.

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I am Grandpa, ask me anything Before the steering wheels, how do people drive cars?

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IAG, AMA Well, someone tried this.

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IAG, AMA Some even more creative

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IAG, AMA Finally, we ended up with this genius invention.

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Life before Rack This steering wheel problem happened to the Ruby world too!

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Life after Rack

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Even when you switch the web-server

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Or the ruby framework

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What’s Rack? Rack provides a minimal interface between web-servers that support Ruby and Ruby frameworks.

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What’s Rack? ● Web servers: Puma, Phusion Passenger, Unicorn, Thin, etc. ● Ruby applications: Sinatra, Grape, Ruby on Rails, Hanami, etc.

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How to Rack?

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How to Rack? rackup -p 9200

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Rack Middleware Rack provides an easy way to chain the middlewares / components to customize the way your requests / response behaves

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Live coding

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Questions