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@mattheath #VoxxedBerlin Platinum Sponsor Building Microservice Architectures with Go Matt Heath Mondo

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@mattheath

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1895

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monoliths traditional dev

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?

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DATABASE APPLICATION

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DATABASE APPLICATION

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DATABASE DATABASES APPLICATION

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DATABASE DATABASES APPLICATION SEARCH

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DATABASE DATABASES APPLICATION CACHE SEARCH

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DATABASE DATABASES APPLICATION CACHE SEARCH CAT GIFS

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ALL HAIL THE MONOLITH

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DO NOT WANT

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DATABASE DATABASES APPLICATION CACHE SEARCH CAT GIFS

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APPLICATION

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Microservices at Mondo?

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Single Responsibility Principle

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Bounded Context

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Well defined Interfaces

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Composability

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Getting started

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LOAD BALANCER

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LOAD BALANCER HTTP API & ROUTING LAYER

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TRANSPORT LOAD BALANCER HTTP API & ROUTING LAYER

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SERVICE SERVICE SERVICE TRANSPORT LOAD BALANCER HTTP API & ROUTING LAYER

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SERVICE SERVICE SERVICE TRANSPORT DATABASE DATABASE DATABASE LOAD BALANCER HTTP API & ROUTING LAYER

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SERVICE SERVICE SERVICE TRANSPORT DATABASE DATABASE DATABASE LOAD BALANCER API GATEWAY

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APPLICATION LOAD BALANCER

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API GATEWAY APPLICATION LOAD BALANCER

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API GATEWAY APPLICATION LOAD BALANCER

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API GATEWAY APPLICATION LOAD BALANCER SERVICE SERVICE SERVICES

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Simple Static typing Static linking

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Comprehensive stdlib eg. Networking

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Concurrency

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Interfaces

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Go Kit micro gRPC Kite

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mondough/typhon mondough/mercury

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LOAD BALANCER

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LOAD BALANCER HTTP API & ROUTING LAYER

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API SERVICE LOAD BALANCER HTTP API & ROUTING LAYER

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/webhooks —-> Webhook API

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WEBHOOK API LOAD BALANCER HTTP API & ROUTING LAYER

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WEBHOOK API AUTH SERVICE WEBHOOK SERVICE LOAD BALANCER HTTP API & ROUTING LAYER

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WEBHOOK API AUTH SERVICE WEBHOOK SERVICE LOAD BALANCER HTTP API & ROUTING LAYER DATABASE

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WEBHOOK API AUTH SERVICE WEBHOOK SERVICE LOAD BALANCER HTTP API & ROUTING LAYER DATABASE DATABASE

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API SERVICE SERVICE A SERVICE B LOAD BALANCER HTTP API & ROUTING LAYER DATABASE DATABASE EXTERNAL PROVIDER

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SERVICE

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Logic Handlers Storage SERVICE

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mercury Logic Handlers Storage SERVICE

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type Handler func(request) (response, error)

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type Transport interface { ... }

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type Transport interface { Listen(serviceName string, inbound chan<- request) error StopListening(serviceName string) bool Respond(req request, resp response) error Send(req request, timeout time.Duration) (response, error) ... }

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type Transport interface { Listen(serviceName string, inbound chan<- request) error StopListening(serviceName string) bool Respond(req request, resp response) error Send(req request, timeout time.Duration) (response, error) ... }

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mercury Logic Handlers Storage SERVICE

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mercury Logic Handlers Storage libraries SERVICE

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mercury Logic Handlers Storage libraries SERVICE Deployment Service Discovery Configuration Monitoring Authentication Authorisation Storage Circuit Breaking

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Small Images

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Statically Compiled

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Root CA Certs

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Making our service reliable

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Event Driven Architecture

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API SERVICE SERVICE A SERVICE B LOAD BALANCER HTTP API & ROUTING LAYER

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API SERVICE SERVICE A SERVICE B LOAD BALANCER HTTP API & ROUTING LAYER

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API SERVICE SERVICE A SERVICE B LOAD BALANCER HTTP API & ROUTING LAYER

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API SERVICE SERVICE A SERVICE B LOAD BALANCER HTTP API & ROUTING LAYER SERVICE C SERVICE D E

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API SERVICE SERVICE A SERVICE B LOAD BALANCER HTTP API & ROUTING LAYER SERVICE C SERVICE D G E F

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? ? ? LOAD BALANCER HTTP API & ROUTING LAYER ? ? ?? ? ? ? ? ? ? ?

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Topology Management

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WEBHOOK API LOAD BALANCER HTTP API & ROUTING LAYER WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE

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WEBHOOK API LOAD BALANCER HTTP API & ROUTING LAYER WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE

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WEBHOOK API LOAD BALANCER HTTP API & ROUTING LAYER WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE

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WEBHOOK API LOAD BALANCER HTTP API & ROUTING LAYER WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE SLOW / ERRORS

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Fanout & Cancellation

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WEBHOOK API WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE

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WEBHOOK API WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE

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WEBHOOK API WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE

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WEBHOOK API WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE

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WEBHOOK API WEBHOOK SERVICE WEBHOOK SERVICE WEBHOOK SERVICE

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Context Propagation

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package context type Context interface { Deadline() (deadline time.Time, ok bool) Done() <-chan struct{} Err() error Value(key interface{}) interface{} }

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package context type Context interface { Deadline() (deadline time.Time, ok bool) Done() <-chan struct{} Err() error Value(key interface{}) interface{} }

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package context type Context interface { Deadline() (deadline time.Time, ok bool) Done() <-chan struct{} Err() error Value(key interface{}) interface{} }

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Testing

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Load Failure Degradation

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Monitoring

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Monitor your Business Logic

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♥ customers

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In-Band vs Out of Band

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type Checker func() (error, map[string]string)

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Distributed Tracing

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api api api.customer api.customer service.customer service.customer

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api api api.customer api.customer service.customer service.customer

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8096820c-3b7b-47ec-bce6-1c239252ab40

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api api api.customer api.customer service.customer service.customer

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api api api.customer api.customer service.customer service.customer

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package context type Context interface { Deadline() (deadline time.Time, ok bool) Done() <-chan struct{} Err() error Value(key interface{}) interface{} }

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package context type Context interface { Deadline() (deadline time.Time, ok bool) Done() <-chan struct{} Err() error Value(key interface{}) interface{} }

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api api api.customer api.customer service.customer service.customer

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api api api.customer api.customer service.customer service.customer SEND RECV SEND RECV RECV SEND RECV SEND

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api api.customer service.customer SEND RECV SEND RECV RECV SEND RECV SEND phosphor

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

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

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

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

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

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

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Small Simple Easy to learn

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Concurrency Interfaces Networking

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Downsides?

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Starting with Microservices?

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#voxxedberlin Thanks! @mattheath @getmondo

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ATM: Thomas Hawk
 Bank of Commerce: ABQ Museum Archives IBM System/360: IBM Absorbed: Saxbald Photography Orbital Ion Cannon: www.rom.ac Go Gopher: Renee French Control Room: NASA ATM Failure: George Redgrave Credits