microservices - scaling the business at scania cs - lean tribe södertälje - 2016-10-05

Microservices – Scaling the Business@ Scania Connected Services

Anders Lundsgård

@anderslundsgard

Södertälje - October 5, 2016

Scania Connected Services

~200.000 connected vehicles~80 engineers

Scaling the Business

We see a huge potential in expanding the business on

Scania Connected Data

WORK FASTER!!

Our software evolution

‘90sSpaghetti Code

‘00sGrowing monoliths

‘10sMicroservices era

The reality today

Remembering the past…Continuous Integration• Version everything• Automate build, tests, deploy• Claim > Blame• Trunk based development

The very last manual deployment of the Monolith

CODEIN PROD

PENDING CODE

NEWFEATURES

High focus on Limit Work In Progress

= INVENTORY

GUI

Database

Infra

Business Logic

Networking Storage

OS

Integration

Service 1

Service 2 Service

5 Service 7

Service 8

Service 10

Service 12

Service 14

Service 3

Service 4

Service 6

Service 9

Service 11

Service 15

Middleware

Service 13

User Interface

Security Monitoring

Even with Continuous Integration, fast delivery is hard with 50+

engineers and a large codebase.

Monolith

All Infra needs

User Interface

Service 1

Service 2 Service

5 Service 7

Service 8

Service 10

Service 12

Service 14

Service 3

Service 4

Service 6

Service 9

Service 11

Service 15

Service 13

All Infra needs

All Infra needs

All Infra needs

All Infra needs

All Infra needs

All Infra needs

All Infra needs

GUI

Database

Infra

Business Logic

Why Microservices?1. Autonomous teams

2. Build, Test, Deploy SPEED

Microservices

0. Business: “WORK FASTER”

Version Control

Pull & Push several times a day

Continuous Integration

Server Target Servers(Dev, Staging, Prod)

Version Everything- Code- Tests- Configuration- Database- Infrastructure

15 minutes

Automation – Deployment Pipeline

DeployServer

CI D

Deploy != Release

Business decision

Feature Team concern

Feature Team concern

Feature Toggle

Tilda 4 makes release to UK market

Zero Downtime

Visibility

10.000+ unique portal users per month

Check-in frequency

Project: Scania Connected Services

Change Stop

22

200301401404500

23

200301401404500

Challenges

Separation of duties• Support, Market, Dev, Ops• Extend our DevOps movement to include the Business

Breaking down the Monolith…• …without practicing to many ‘Anti-patterns’

Testing Microservices• Contract tests• Monitoring > End to end tests• Test in Prod

Cloud abilities

Scania – A growing horse

Thank You!

Anders Lundsgård

@anderslundsgard