what has soundcloud learnt about microservices?

What has SoundCloud

microservices?

learnt about

Phil CalçadoSoundCloud

>11 hours ofaudio uploaded every minute

~300million peopleevery month

What we

2012-13did in

SoundCloud.com

Sounds ˝& Sets

Social Graph

Premium ˝Features Search

Activity Stream

API

Sounds ˝& Sets

Social Graph

Premium ˝Features Search

Activity Stream

API

api.soundcloud.com

iOS Android Desktop Widget 3rd Party

api-mobile

iOS Android Desktop Widget

api web api-partn

3rd Party

More details

http://bit.ly/dealing-with-the-monolith

minimise

fixed costyour

per app

#1

every new app answers

What language?

What I/O lib?What build system?

How do we deploy?What do we monitor?

typical agile project

iteration 0 iteration 1 iteration 2 iteration 3 iteration 4

technical tasksuser stories

typical microservices project

iteration 0 iteration 1 iteration 2 iteration 3 iteration 4

You will have lots of microservices

Consider having a “standard”, well-

supported and documented stack

outsource

as possibleas much

#2

micro service x-ray

infrastructure

app

Avoid building as much ˝infrastructure as possible

some good options

Only infrastructure we need to build is the glue between the lib and our

quirks

Avoid having quirks

acknowledge

complexitythe new

#3

user

likes

track

user

likes

track

unit test

single process

run inside an IDE

typical app

user

likes

track

integration test

multiple processes

stubs and fakes

microservice

+ +

must be easy to provision

make

visibleeverything

#4

make interactions visible

standardised dashboards

legacywrap your

stranglerswith

#5

api-mobile

iOS Android Desktop Widget

api web api-partn

3rd Party

not exactly true

iOS Android Desktop Widget 3rd Party

api.soundcloud.com

mothership still alive

api web api-partn

Client

api.soundcloud.com

Client

strangler

api.soundcloud.com

Client

strangler

api.soundcloud.com

Client

strangler

api.soundcloud.com

changedwhat changed

2013?since

babysitting

Rails

Stop

☑

Enable &

app devsempower☑

“Experience

api?based” ☒

comes

next?

What

devicesmore

based

RPC?

IDL

test

environments

ephemeral

phil calçado

http://philcalcado.com˝@pcalcado˝

www.soundcloud.com˝