Scaling Happiness Horizontally

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Scaling Happiness Horizontally Mark Wunsch @markwunsch

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Agenda ‣ Gilt Organization ‣ Gilt Architecture ‣ Organization ⟳ Architecture

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Conway’s Law “Organizations which design systems…are constrained to produce designs which are copies of the communication structures of these organizations.”

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Conway’s Law? “Organizations which design systems…are doomed to produce designs which are copies of the communication structures of these organizations.”

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shared nothing architecture

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“Resources”

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‣ Front End Engineer ‣ Back End Engineer ‣ UX Designer ‣ Visual Designer ‣ Product Manager ‣ Project Manager ‣ QA Engineer

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Deadlock.

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A monolith is a mutex.

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highly concurrent, distributed, & fault tolerant

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http://tmblr.co/ZcvzqxsOM8 Teams Ingredients Initiatives KPIs

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Initiatives & KPIs

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Teams & Ingredients

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Hive Mind! vs Pen Pals! [^1] [^1]: http://livestre.am/3ZHDH

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L O S A

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Lots Of Small Applications

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Fallacies of Distributed Computing Organizations 1. The network is reliable. 2. Latency is zero. 3. Bandwidth is inﬁnite. 4. The network is secure. 5. Topology doesn’t change. 6. There is one administrator. 7. Transport cost is zero. 8. The network is homogeneous. http://en.wikipedia.org/wiki/Fallacies_of_Distributed_Computing

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Consistency& Availability& Partition Tolerance.

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Consistency& Availability& Partition Tolerance. [^2] [^2]: http://codahale.com/you-cant-sacriﬁce-partition-tolerance/

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https://code.google.com/p/gerrit/

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http://tomayko.com/writings/adopt-an-open-source-process-constraints

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␄

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Appendix 1. http://www.melconway.com/Home/Conways_Law.html 2. http://en.wikipedia.org/wiki/Dining_philosophers_problem 3. http://en.wikipedia.org/wiki/Sleeping_barber_problem 4. Scaling Agile at Gilt → http://tmblr.co/ZcvzqxsOM8 5. Code as Craft: Coda Hale → http://livestre.am/3ZHDH 6. The Eight Fallacies of Distributed Computing → http:// nighthacks.com/roller/jag/resource/Fallacies.html 7. http://codahale.com/you-cant-sacriﬁce-partition-tolerance/ 8. http://tomayko.com/writings/adopt-an-open-source-process- constraints