the hidden costs of the microservices architecture

by mirosław nagaś

presentation goal

— Simon Brown

“If you can't build a monolith, what makes you think microservices are the answer?”

microservices 101

developed independently by different teams technology agnostic

loosely coupled small, easy to replace

microservices 101

“There's just no getting around it: you're building a distributed system”

— Mark Cavage, ACM Queue

¯\_( )_/¯

1

microservices 101

distributed systemis a

complexity booster

understand

design

build

operate

#12factorapp

#reactivemanifesto

eg. fallacies of distributed computing

the network is reliable

latency is zero

bandwidth is infinite

transport cost is zero

distributed systemintroduces

steep learning curve

effects of the fallacies deadly impact communication

communication

microservices communicate a LOT

(a)synchronous

communication

you will need several distributed systems to operate, manage and monitor your distributed system

2

microservices 101

distributed systems

everything-as-a-service

distributed systems

shitload of good things

3

microservices 101

release early, release often

SoT

similarity to IoT

intentional

continuous integrationautomated tests

continuous deliverycontinuous deployment

SoT

SoT

canary deploymentscircuit breakerscentral logging

immutable infrastructure chaos monkey

SoT

IaaSPaaS

365 days ofuptime

is so yesterday…

SoT

4

organisational

Image credit: http://martinfowler.com/bliki/MicroservicePrerequisites.html

Mr.Handyman Ops

.org shift

Image credit: http://www.homesenergy.co.uk/

DevOps

.org shift

collaborativesoftware development

Image credit: http://martinfowler.com/bliki/DevOpsCulture.html

DevOps

NoOps

.org shift

it’s not aboutelimination of ops people

NoOps

it’s aboutdecentralized operations

NoOps

it’s aboutfull automation for all critical

development and releases processes

NoOps

it’s aboutscalable, elastic, fault tolerant and

high available systems and infrastructure

NoOps

it’s aboutproducts, not projects

.org shift

Thank you

@miroslawnagas

lab.getbase.com