Release Early & Release Often: Reducing Deployment Friction

RELEASE EARLY &

Reducing Deployment Friction

RELEASE OFTEN

Saturday, October 1, 11

ANDY DELCAMBREIt rhymes with “Welcome”


@adelcambre


REDUCING DEPLOYMENTFRICTION


REDUCING DEVELOPMENTFRICTION


STARTING A NEW TASK


git checkout -b U-666


git commit -m “[U-666] add unicorns”


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Finished in 10.809554 seconds

109 examples, 0 failures, 3 pending


EyBot


require 'ey/irc'

run EY::Irc::Receiver.new { |message| case message.body when /^ping$/ message.say(message.to, ”Hello World!”) endend


CONTINUOUS INTEGRATION


MASONSaturday, October 1, 11

git checkout mastergit merge U-666

git push origin master


MARK TICKET AS “MERGED”


AUTO DEPLOY TO EDGE


404 DEPLOYS IN SEPTEMBER


~ 20 per week day


2-9 Production Deploys per Day


EyBot: release awsm production


Ensure master is green


Tag the release


Assign all merged tickets to the version


Push tag to the deploy branch


Production automatically deploys from the deploy branch


Mark all tickets in this release as resolved


Send Notifications


Hoptoad Airbrake


New Relic


Email


The actual deploy


Fairly Standard Deploy


current/ releases/ shared/


Unicorn


bundle install --deployment


Zero Downtime Migrations


No Magic, Just a technique


Adding a column


Add a migration to add the column


Ship code that needs the new column


Deploy the codeRestart the serversThen run migrations


More examples


Removing a Column


Renaming a column


A work in progress


Thanks!


Questions?

twitter.com/adelcambre

engineyard.com

We’re hiring!


Release Early & Release Often: Reducing Deployment Friction

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