Slide 1

Slide 1 text

Building Composable Services Noah Kantrowitz

Slide 2

Slide 2 text

What? Why? How? Perils? Press Start

Slide 3

Slide 3 text

What? World 1-1

Slide 4

Slide 4 text

What is a Function?

Slide 5

Slide 5 text

f(x, y) = z

Slide 6

Slide 6 text

What is Idempotence?

Slide 7

Slide 7 text

f(x) = f(f(x))

Slide 8

Slide 8 text

What is Composable?

Slide 9

Slide 9 text

f(x) g(x) f(g(x))

Slide 10

Slide 10 text

req_user(x) user_id(x) user_id(req_user(x))

Slide 11

Slide 11 text

post('http://login') get('http://search')

Slide 12

Slide 12 text

Why? World 1-2

Slide 13

Slide 13 text

Availability

Slide 14

Slide 14 text

Scaling

Slide 15

Slide 15 text

Testing

Slide 16

Slide 16 text

Logistics

Slide 17

Slide 17 text

How? World 1-3

Slide 18

Slide 18 text

Frameworks Storage Rich Data Discovery Resilience Containers Level Up Select a Skill

Slide 19

Slide 19 text

ยต-frameworks

Slide 20

Slide 20 text

Flask (Python) Sinatra (Ruby) Express (JavaScript)

Slide 21

Slide 21 text

ZeroMQ nanomsg ProtoBufs Cap'nProto

Slide 22

Slide 22 text

Data Storage (aka state)

Slide 23

Slide 23 text

AP Database

Slide 24

Slide 24 text

Cache is the enemy

Slide 25

Slide 25 text

Rich Data {id: me, cart: http...}

Slide 26

Slide 26 text

Hypermedia APIs

Slide 27

Slide 27 text

Service Discovery

Slide 28

Slide 28 text

Self-Organization

Slide 29

Slide 29 text

DNS nslookup('login')

Slide 30

Slide 30 text

ZooKeeper CP Database

Slide 31

Slide 31 text

Etcd Serf Consul Archaius

Slide 32

Slide 32 text

Resilience

Slide 33

Slide 33 text

Timeouts Idempotent Retries

Slide 34

Slide 34 text

post('chpw', nonce: 314)

Slide 35

Slide 35 text

Any service can be down

Slide 36

Slide 36 text

Async Messaging Queues

Slide 37

Slide 37 text

AMQP Kafka

Slide 38

Slide 38 text

Containers

Slide 39

Slide 39 text

Less RAM Less Problems

Slide 40

Slide 40 text

LXC Jails Zones Docker/Mesos

Slide 41

Slide 41 text

Security Isolation

Slide 42

Slide 42 text

Immutable Deployment

Slide 43

Slide 43 text

Logical Boundaries

Slide 44

Slide 44 text

Perils? World 1-4

Slide 45

Slide 45 text

Cascade Failures

Slide 46

Slide 46 text

Poor Visibility

Slide 47

Slide 47 text

Health & Metrics Central Logging Dashboards

Slide 48

Slide 48 text

Complex Deployments

Slide 49

Slide 49 text

Minimalist Self-organizing Fault-tolerant

Slide 50

Slide 50 text

Thank You

Slide 51

Slide 51 text

Noah Kantrowitz @kantrn coderanger.net Questions?