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Continuous Integration, fast builds and Flot
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Chris Bushell
February 03, 2010
Programming
2
56
Continuous Integration, fast builds and Flot
Prepared for the Melbourne Patters Group
Chris Bushell
February 03, 2010
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Transcript
Con$nuous Integra$on, Fast Builds and Flot Chris Bushell
-‐ Melbourne Pa9erns Group February 3rd 2010
Tradi$onal SoCware Development • Waterfall • Development happens
independently, in parallel streams • Integra$on phase
Integra$on Is Painful • Time consuming • Unpredictable
Typical SoCware Development
Con$nuous Integra$on • Single source code repository •
Automated build • Automated tests • Frequent commits
CI In Prac$ce – Check Out Time
CI In Prac$ce – Write Code Time
CI In Prac$ce – Run Build Time
CI In Prac$ce – Commit Time
CI In Prac$ce Time
CI In Prac$ce – Con$nuous Build Time
Encourage Frequent Check-‐Ins • Integra$ng small changes is much
less painful and $me consuming than integra$ng large changes
Problem -‐ Builds Can Become Slow • More code
= more tests = longer build $me
A Fast Build Is Essen$al • Idle developers
• Context switching • Unable to deliver new features • I get bored easily
Monitoring Build Time • Need to measure how long
your build takes
Con$nuous Integra$on Server • API allows us to access
historic build $me informa$on
Flot • Demo
Speeding Up A Slow Build • Split code base
Speeding Up A Slow Build • Hardware •
SSD
Speeding Up A Slow Build • Think about how
to test • Unit tests are fast • Func$onal tes$ng can be slow
Speeding Up A Slow Build • Isola$on from slow
dependencies • Impersonator pa9ern
Speeding Up A Slow Build • Parallelize build
– Be careful with shared dependencies
Speeding Up A Slow Build • Choose a light
weight development container
Speeding Up A Slow Build • Sam Newman’s Build
Pa9erns – Check In Gate – Fish Eye Test Suite – Build Time Limit