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Banking on Go Matt Heath, Monzo

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Hi, I’m Matt @mattheath

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monoliths traditional dev

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Microservices

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Microservices

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monzo/typhon

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type Service func(req Request) Response

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router.GET("/", handler.List) router.POST("/", handler.Register) router.DELETE("/:id", handler.Deregister)

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Service Service

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Service Service Service Service

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+ = ❤

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Service Service Service Service

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Service Service Service Service linkerd

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Service Service Service Service linkerd

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Service Service Service Service linkerd

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Service Service Service Service linkerd service
 discovery

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0 40 80 160 120 Feb 2015 200 Number of services 240 280 320 Sep 2017

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API card-api card-processing cards transactions ledger transaction-enrichment merchant feed-generator feed apns API card-api card-processing cards transactions ledger transaction-enrichment merchant feed-generator feed apns

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Attack of the mainframes

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monoliths traditional dev

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go generate payment_messages

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Kubernetes Service Third
 Parties ???

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Kubernetes Service service pod Go based
 UDP 
 encapsulator routing table
 routes IP range to local udp
 encapsulation
 interface “connectivity” pods VPN
 network
 interface Go based
 UDP 
 listener routing table
 routes packets
 to local vpn
 interface colocation VPN
 Appliance Third
 Parties

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GC Pauses

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Decimals

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Testing

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API card-api card-processing cards transactions ledger transaction-enrichment merchant feed-generator feed apns API card-api card-processing cards transactions ledger transaction-enrichment merchant feed-generator feed apns

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Future?

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Thanks! @mattheath @monzo