spotify guest
Post on 05-Apr-2018
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8/2/2019 Spotify Guest
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Distributed Systems
Jon slund@jooon
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Who am I?
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Jon slund
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Sweden
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Computer Science
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Shakespeare
ProgrammingLanguage
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Joined SpotifyAutumn 2006
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April 2006the idea
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music itself is going to become
like running water or electricityDavid Bowie, 2002
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Spotify Box
Spotify Box Jordi Parra @zenona
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February 2012
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10+ million users(active within previous 30 days)
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15+ million tracks
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500+ million playlists
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1000+ serversin 3 countries
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Spotify is a distributedsystem
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Fast
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Always working
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How do youaccomplish that?
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Cheatas much as possible
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Fast
vsFeels fast
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Always working
vsPretend there is
nothing wrong
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Build to fail
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Redundancy(talk about waffles)
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Error recovery
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Don't forget to testyour recovery code
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Fire drill: Cut theatlantic cable
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NetflixChaos Monkey
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On January 15, 1990,AT&Ts long-distancetelephone switching systemcrashed.
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Isolation
G tti th i ht t l
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Getting the right tool
for the job
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Consistency
AvailabilityPartition tolerance
http://ksat.me/a-plain-english-introduction-to-cap-theorem/
http://ksat.me/a-plain-english-introduction-to-cap-theorem/http://ksat.me/a-plain-english-introduction-to-cap-theorem/ -
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user
user
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PostgreSQL
user
user
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user
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search
search
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Lucene index inmemory
search
search
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replaced daily
search
search
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read only
search
search
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scales horizontally
search
search
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sort of
search
search
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How do you replace an
index in memory whenyou are using all of it?
search
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storage
storage
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storage
storage
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sto age
lru cache in nginx
storage
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g
better use of memorywith sharding
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storage
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g
consistent hashing
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playlist
playlist
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cassandra
p y
playlist
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structured key-valuestore
p y
playlist
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high throughput
p y
playlist
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choose redundancy andconsistency level
p y
playlist
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datacentre aware
p y
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p2p
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p2p
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thank you
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Master Thesis?
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Yes, please!
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or come and work for us
Oh and
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Oh, and
we havecake as
well! :D
spotify.com/jobs
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