The document discusses implementing microservices. It describes microservices as not being a new concept, but as services that are independent and rely on each other. Microservices force the design of systems to account for failures. The document provides recommendations for implementing microservices like having each service on its own server, doing high availability correctly, using containers, implementing API versioning, handling operations asynchronously, and addressing challenges like increased costs, network fragmentation, and complexity.

1. How to Implement MicroservicesDevOpsExchangeLondonApr2014
Marc Cluet
DevOps & Automation Advisory
Rackspace
https://www.flickr.com/photos/charlattecreations/2451149483

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Who am I?!
Marc Cluet (@lynxman)
More than 16 years of experience as a
SysAdmin
Founding member of Juju and MAAS
while at Canonical
Leading a DevOps Engineering Team at
Rackspace
Been DevOps’in for 5 years now

3. RACKSPACE® HOSTING | WWW.RACKSPACE.CO.UK
What is Rackspace?!
Founded in 1998 in San Antonio, TX by
three guys that wanted to create a hosting
company
Home of Fanatical Support /o/
Second biggest Public Cloud in the world
OpenStack Project co-founder

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So… Microservices!!
https://www.flickr.com/photos/wintermute2600/4056854111

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So… Microservices!!
Microservices are not new!
!!

6. RACKSPACE® HOSTING | WWW.RACKSPACE.CO.UK
So… Microservices!!

7. RACKSPACE® HOSTING | WWW.RACKSPACE.CO.UK
So… Microservices!!
https://www.flickr.com/photos/marfis75/3279307888

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So… Microservices!!
Microservices are reliant!
!!

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So… Microservices!!
https://www.flickr.com/photos/5wa/8593739154

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So… Microservices!!
Microservices force you to!
Design for Failure!!
!!

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So… Microservices!!

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Recommendations!
https://www.flickr.com/photos/mdpettitt/4818781521

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1 Server per Service!
https://www.flickr.com/photos/90994070@N00/4700774401

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Do your HA right!
https://www.flickr.com/photos/daverugby83/4583767689

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Containers!
https://www.flickr.com/photos/gcwest/281385801

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Containers!

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Containers!
<3!
!!

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Containers!

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API Versioning!
https://www.flickr.com/photos/kevinbyrom/5027408898/

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API Versioning!
https://www.flickr.com/photos/kevinbyrom/5027408898/
Version 1
/servers?image=imageId& flavor=flavorId& name=serverName&
status=serverStatus& marker=markerID& limit=int&changes-
since=dateTime& RAX-SI:image_schedule=boolean
Version 2
/v2/{tenant_id}/servers​{?changes-since,​image,​flavor,​name,​marker,​
limit,​status,​host}
Version 3
/v3/servers/{server_id}/action​{?changes-since,​image,​flavor,​name,​
marker,​limit,​status,​host}

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Sync vs Async!
https://www.flickr.com/photos/beate_meier/8337014543

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Sync vs Async!
Action 1 Action 2 Action 3

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Sync vs Async!
Action 1 Action 2
Action 2b
Action 3

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Sync vs Async!
Router
API Server
Scheduler
MQ
Worker

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Dark Side of Microservices!
https://www.flickr.com/photos/kalexanderson/7556757396

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Costs!
https://www.flickr.com/photos/amagill/3366720659

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Concentration!
https://www.flickr.com/photos/z_wenjie/5602616401

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Network Fragmentation!
https://www.flickr.com/photos/small_realm/6898449633

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https://www.flickr.com/photos/mikko_luntiala/12691267935
https://www.flickr.com/photos/dullhunk/202872717

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