Clustering in Go
[Pages:42]5/26/2016
Clustering in Go
Clustering in Go
May 2016
Wilfried Schobeiri MediaMath
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Who am I?
Clustering in Go
Go enthusiast
These days, mostly codes for fun
Focused on Infrastruture & Platform @ MediaMath ()
We're hiring!
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Why Go?
Clustering in Go
Easy to build services
Great stdlib
Lot's of community libraries & utilities
Great built-in tooling (like go fmt, test, vet, -race, etc)
Compiles as fast as a scripting language
Just "feels" productive
(This is not a language pitch talk)
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Clustering in Go
Why "Clustering in Go"?
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Why "Clustering in Go"?
Clustering in Go
Clustering is not batteries included in Golang Lots of newer libraries, none very mature More often not, services roll it themselves
So, here's one way of building a clustered, stateful service in Go.
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Clustering in Go
And now, for a (fake-ish) scenario
Multiple datacenters
Separated by thousands of miles each (eg, ORD - HKG - AMS),
With many events happening concurrently at each one.
We want to count them.
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With some constraints:
Clustering in Go
Counting should be fast, we can't a ord to cross the ocean every time Counts should be correct (please don't lose my events)
Starting to look like an AP system, right?
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Let's get started
First, a basic counter service One node Counter = Atomic Int Nothin Fancy
$ curl 0 $ curl 1
Clustering in Go
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