RailsClub 2016 - Speaker Deck

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Monolithic Rails:   deal with it Railsclub 2016 Kir Shatrov

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Kir Shatrov Developer acceleration @ Shopify " Rails, Capistrano, RubyBench

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Developer acceleration team

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Rails Ruby Developer Tools

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git clone … brew install postgres brew install redis bundle install rake db:create

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git clone … brew install postgres brew install redis bundle install rake db:create где-то тут ломается nokogiri

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git clone … brew install postgres brew install redis rake db:create vagrant up

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VM creation is slow VM has to be updated every week from Chef Development in VM is slower VM ﬁle system has limitations for frontend stuff

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The xhyve hypervisor is a port of bhyve to OS X. It is built on top of Hypervisor.framework in OS X 10.10 Yosemite and higher, runs entirely in userspace, and has no other dependencies.

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install Homebrew packages provision language and dependencies ruby, node, go create and prepare database setup Git hooks

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git clone … brew install postgres brew install redis rake db:create dev up

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Detect dangerous patterns ☠

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Detect dangerous patterns changing existing migrations adding new gems changing application conﬁguration

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⚓ CI ⚓

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50 000

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⚰ Rails upgrade

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1. Make your application boot (fix gem conflicts) 2. Setup two Gemfiles and two CI statuses 3. Fix failings tests 4. Deploy to 10% of nodes

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1. Make your application boot (fix gem conflicts) 2. Setup two Gemfiles and two CI statuses 3. Fix failings tests 4. Deploy to 10% of nodes

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1. Make your application boot (fix gem conflicts) 2. Setup two Gemfiles and two CI statuses 3. Fix failings tests 4. Gradually deploy

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⏱ Application boot ⏱

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$ rails new railsclub --skip-spring $ time bundle exec rails runner "puts 1+1" 2 0.64s user 0.09s system 24% cpu 2.969 total

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require 'activerecord' require '/Users/kir/Projects/shopify/vendor/bundle/gems/ activerecord-4.2.7.1/lib/activerecord.rb'

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github.com/byroot/bootscale

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Rails hacks

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block any external calls from inside database transaction instrument Net::HTTP by host lint database migrations circuit breaker