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kenjiskywalker
August 29, 2014
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yapcasia2014
kenjiskywalker
August 29, 2014
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Transcript
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)
No system lasts forever People makes mistakes
What we do?
Image your Web Service
Journey of! Web Services Growth
The Birth of! Web Service
Important! Two things
Records Important! Two things
Records Important! Two things Insurance
Why?
Someday Hardware will fail
Someday Hardware will fail
Someday! People makes mistakes Someday Hardware will fail
Someday! People makes mistakes Someday Hardware will fail
Records! Insurance At the start! of Web Service
None
Increase User
Increase User
Increase User Increasing system loads
Increase User Increasing system loads Degrading responses
web db
web db web db
Scale Out! web db
What is necessary ? web db
Repeatability Same function can be set up -> Scale Out
-> Load Balance
Simplicity Easy Operation -> Loose coupling -> independent of environment
Simplicity Repeatability Increase User! at Scale up, Scale out
None
For Web Service Continuity
Addition of service ! functions
add batch function …! add cache function …! add queue
function …! add …! add …! add …
Complexity! Increases
What is necessary ?
-> Recreated easily Repeatability -> Anywhere
-> Loosely coupling -> Add, drop easily Simplicity
Simplicity Repeatability Complexity ! Increases
None
Time goes by
None
Machine trouble
None
Operation miss
None
Records Insurance Repeatability Simplicity
Accuracy of! Records and Insurance
Time is Cost Problems and Recovery more time, more efficient
Accuracy of! Records and Insurance The Luxury Liner with! No
Passengers or! Sailing the Seven Seas in a Raft
π Time Cost Risk decide
None
Web Service Continue
None
Approaching! The end of Our journey
No system lasts forever People makes mistakes
Insurance Records
System constantly! changing
Repeatability Simplicity
Learn from history
The UNIX Philosophy Small is Beautiful! ! Make each program
do one thing well.! ! Choose portability over efficiency.! ! …
ࣜભٶ Photo : ਆٶࣜભٶ - Wikipedia Maintain the sanctity! always
Photo : https://www.flickr.com/photos/iskws/ breaking,! breaking,! breaking
None
Expected change! Un expected change
Records! Insurance
Repeatability! Simplicity
Infrastructure as Code
cope with change! be simple Programming
cope with change! be simple Infrastructure
No system is perfect! No human is perfect
The world is not complete
Cope with change
Continuing! Web Services! journey