Microservices - An Overview

Ganesh Samarthyam

Microservices is an architectural style

Complex application = composed of tiny services

Communicate over REST API

HTTP GET

HTTP PUT

HTTP POST

HTTP DELETE

Underlying philosophy

“do one thing and do it well”

Who uses microservices?

Monolithic

Microservices

Conway’s law“Any organization that designs a system… will inevitably produce

a design whose structure is a copy of the organization's communication structure”

Conway’s lawTeam 1

Team 2Team 3

Team 4

Conway’s law

Team 1 Team 2

Team 3

Team 4

Monolithic to microservices

Monolithic to microservices

Microservices = “fine grained SOA” or “SOA 2.0”

Service = manageable by “two pizza” team

Service = a team can DURS (Deploy, Update, Replace, Scale)

Microservices = Damn U R Sexy

Security

Microservices expose a lot more functionality over the network => must ensure secure access

Web resources• Wikipedia entry for microservices • Martin Fowler’s article that provides an overview of micro services • Description of micro services architecture pattern • James Lewis’s podcast in SE-Radio on microservices • Migration to microservices by Adrian Cockcroft (Netflix) • From monolith to microservices by Randy Shoup

Related books

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