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Addicted to Stable
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John Nunemaker
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September 01, 2012
Programming
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Addicted to Stable
Closing keynote for RubyConf Brazil.
John Nunemaker
PRO
September 01, 2012
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Transcript
Addicted to Stable a.k.a how to sleep like an octocat
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Hundreds of Sites
Hundreds of Sites Thousands of Decks
Hundreds of Sites Thousands of Decks Millions of People
Hundreds of Sites Thousands of Decks Millions of People Billions
of Views
“ People want features, but need stability.
Sta·ble Not likely to change or fail
App Code and Servers
Testing Automate
?
? test/unit
? rspec test/unit
? rspec test/unit minitest
YES
design YES
design YES change
design YES change regression
None
None
Work by me
Work by me Pushed code fix
None
Work by robots
Work by robots Closed issue
Work by robots Closed issue Ran test suite
Work by robots Closed issue Ran test suite Deployed code
Backup and Restore Automate
A Single Server Never trust
None
Replicate
Replicate Promote
Replicate Promote Practice
“ Me, at 8pm on a Saturday I’m confirming the
steps and order of commands.
None
Deleted Everything I accidentally Sincerely, Your Employee
Deleted Everything I accidentally Sincerely, Your Customer
users users.archived gauges gauges.archived
hubot restore <repo>
Deleted Everything I accidentally Sincerely, You
None
Deployment Automate
None
hubot deploy github
hubot deploy speakerdeck
hubot deploy gauges
hubot deploy gauges/my-branch
puppet https://github.com/puppetlabs/puppet
moonshine https://github.com/railsmachine/moonshine
HOSTFILTER=‘app7.foo.com’ \ cap production deploy:setup
HOSTFILTER=‘app7.foo.com’ \ cap production deploy
Exceptions Collect and Fix
None
None
< 1 exception per million page views (gauges)
Metrics Collect and Graph
None
None
None
None
None
None
Alerts Email, Push and SMS
None
None
None
Nagios
Pingdom Nagios
Pager Duty Pingdom Nagios
Failover Automate
web1 web2 haproxy/heartbeat
Tracking app3 app4 app5 app6 web1 web2
Tracking app3 app4 app5 app6 web1 web2 - option httpchk
GET /pulse/tracking
Tracking app3 app4 app5 app6 web1 web2 class PulseApp <
Sinatra::Base get '/pulse/tracking' do pulse :kestrel end end
Tracking app3 app4 app5 app6 web1 web2 app1 app2 Reporting
Tracking app3 app4 app5 app6 web1 web2 app1 app2 Reporting
- option httpchk GET /pulse/reporting
Tracking app3 app4 app5 app6 web1 web2 app1 app2 Reporting
class PulseApp < Sinatra::Base get '/pulse/reporting' do pulse :mongo end end
Tracking app3 app4 app5 app6 web1 web2 q1 q2 app1
app2 Reporting
Tracking app3 app4 app5 app6 web1 web2 q1 q2 Workers
db1 db2 db3 app1 app2 Reporting
Team Collaboration and Freedom
46 hubbers When I started in December
115 hubbers As of August 31, 2012 at 10:43am EST
How is that stable???
Collaborate Always
Pull Requests Discussion + ❤
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Chat Campfire to your phone
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Video Face to face and Pairing
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Internal Tools Ideas, Hiring, Music and more!
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300+ ideas
300+ ideas 3000+ comments
300+ ideas 3000+ comments 100+ people
Communicate Always
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None
4300+ statuses
4300+ statuses 4200+ comments
4300+ statuses 4200+ comments 100+ people
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None
170 talks
170 talks 112 people
170 talks 112 people 2 summits/year
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Document Always
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None
Empower Always
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Anyone can view
Anyone can view Anyone can commit
Anyone can view Anyone can commit Anyone can deploy
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296 branches
296 branches 2980 commits
296 branches 2980 commits 307 issues
IN ONE MONTH
ONLY THE WEB APP
Brand Surprise and Delight
Feedback Stupid Easy
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None
[email protected]
[email protected]
[email protected]
Support Fast and Friendly
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None
None
Documentation Useful and Thorough
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Communication Honest and Open
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None
If you present, GitHub covers the bill for you.
If you present, GitHub covers the bill for you and
a buddy.
None
“ On Saturday, June 2nd, we had a perfect storm
of cascading failures resulting in around four hours of lost tracking data.
“ We have commissioned a new database cluster with automatic
failover that we hope to be using sometime next week.
“ We hate that we lost your data. Know that
we have learned from this and will rise from the ashes of your data loss like a GLORIOUS PHOENIX.
Celebration Public and Genuine
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automate testing, backing up, restoring, deploying, collect exceptions, metrics, send
alerts, fail gracefully, collaborate, communicate, document all the things, empower, get feedback, provide awesome support, communicate, celebrate
The End.