yapcasia2014 - Speaker Deck

yapcasia2014

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Kenji Naito a.k.a kenjiskywalker The world is not complete Photos : https://www.ﬂickr.com/photos/gsfc YAPC::Asia 2014 2014/08/29 (day 1)

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No system lasts forever People makes mistakes

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What we do?

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Image your Web Service

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Journey of! Web Services Growth

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The Birth of! Web Service

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Important! Two things

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Records Important! Two things

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Records Important! Two things Insurance

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Why?

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Someday  Hardware will fail

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Someday  Hardware will fail

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Someday! People makes mistakes Someday  Hardware will fail

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Someday! People makes mistakes Someday  Hardware will fail

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Records! Insurance At the start! of Web Service

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Increase User

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Increase User

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Increase User Increasing system loads

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Increase User Increasing system loads Degrading responses

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web db

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web db web db

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Scale Out! web db

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What is necessary ? web db

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Repeatability Same function can be set up -> Scale Out -> Load Balance

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Simplicity Easy Operation -> Loose coupling -> independent of environment

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Simplicity Repeatability Increase User! at Scale up, Scale out

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For Web Service Continuity

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Addition of service ! functions

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add batch function …! add cache function …! add queue function …! add …! add …! add …

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Complexity! Increases

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What is necessary ?

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-> Recreated easily Repeatability -> Anywhere

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-> Loosely coupling -> Add, drop easily Simplicity

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Simplicity Repeatability Complexity ! Increases

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Time goes by

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Machine trouble

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Operation miss

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Records Insurance Repeatability Simplicity

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Accuracy of! Records and Insurance

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Time is Cost Problems and Recovery more time, more efﬁcient

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Accuracy of! Records and Insurance The Luxury Liner with! No Passengers or! Sailing the Seven Seas in a Raft

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π Time Cost Risk decide

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Web Service Continue

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Approaching! The end of Our journey

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No system lasts forever People makes mistakes

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Insurance Records

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System constantly! changing

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Repeatability Simplicity

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Learn from history

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The UNIX Philosophy Small is Beautiful! ! Make each program do one thing well.! ! Choose portability over efﬁciency.! ! …

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ࣜ೥ભٶ Photo : ਆٶࣜ೥ભٶ - Wikipedia Maintain the sanctity! always

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௕԰ Photo : https://www.ﬂickr.com/photos/iskws/ breaking,! breaking,! breaking