building systems that can pivot | zhamak dehghani, principal consultant, thoughtworks | andy maks,...

BUILDING SYSTEMS THAT PIVOT

Andy Marks amarks@thoughtworks.com

@andee_marks

Zhamak Dehghani zdehghan@thoughtworks.com @zhamakd

CONTINUOUS DELIVERY AS AN ENABLER • automated build • automated deployment • automated environment provisioning - cloud & virtualisation • automated testing

CONTINUOUS DELIVERY AS AN ENABLER • automated build • automated deployment • automated environment provisioning - cloud & virtualisation • automated testing

SP

EE

D O

F D

EL

IVE

RY

C D M A T U R I T Y L E V E L

Threshold without changing architecture

ARCHITECTURE

A THOUGHT EXPERIMENT  

Build Test Integration Acceptance Production

System.out.println (“Hello World!”);

How long will this take?

ELEMENTS OF ARCHITECTURE 

Integration

Off-the-shelf

Bespoke

Off-the-shelf

Bespoke

Integration

Integration

Integration

ELEMENTS OF ARCHITECTURE 

Integration

Off-the-shelf

Bespoke

Off-the-shelf

Bespoke

Integration

Integration

Integration

BESPOKE DEVELOPMENT

MONOLITHIC ARCHITECTURES

LAYERED/TIERED ARCHITECTURE

User Interface/Channels

Business Logic/ Frameworks/Middleware

Database/Systems of Record ?

FINE-GRAINED ARCHITECTURE

BOUNDARIES

BOUNDARIES

A business capability

Placing Order

Tracking Order

Short-term experimentation

Drone Based

Delivery

Technology & security requirements

Debit Cards

Credit Card

Payments

CAN I RELEASE THESE INDEPENDENTLY?

A THOUGHT EXPERIMENT  

Integration

Off-the-shelf MICRO SERVICES

•  Independent •  Business capability •  Published interface

•  Small •  100s, not 1000s

BENEFITS

User Interface/Channels

Business Logic/ Frameworks/Middleware

Database/Systems of Record

AUTONOMY

AUTONOMY ➡ SPEED

ABSORBS TECHNOLOGY FASTER

.NET

Clojure

Java

[SQL Database]

[Graph Database]

[Document Storage]

COMPOSE-ABILITY

AUTOMATE! AUTOMATE!

AUTOMATE!

AUTOMATION

Build Test Integration Acceptance Production

AUTOMATION Build Test Integration Acceptance Production

MONITORING

STATUS •  Up? •  Down?

STATUS •  All up? •  All down? •  Mostly up? •  Up apart from 1? •  All of the important bits are up? •  …

AMAZON PRODUCT PAGE

DOESN’T APPEAR… DO WE CARE?

A THOUGHT EXPERIMENT  

Integration

Off-the-shelf

Bespoke

OFF-THE-SHELF SOFTWARE

PRODUCT SELECTION CRITERIA

•  Can you write automated tests against it?

•  Can it be automatically deployed?

•  Can its environments be automatically provisioned?

•  Can updates be automatically applied?

•  Does it fit the way you work?

•  Is it built using open standards?

•  Does it run on open platforms?

•  Is data stored in open formats?

•  Is it open source?

COTS

TRADE SUBMISSION

CONFIRMATION RECEIPT

Hosted COTS

trade instructions

trade confirmations

A THOUGHT EXPERIMENT  

Integration

Off-the-shelf

Bespoke

COMPONENT INTEGRATION

INTEGRATION

Smart & Complex Integration System

Simple & Dumb Integration

Open standards (e.g., HTTP)

Simple & Dumb Infrastructure SUMMARY

RECOMMENDATIONS

• Bespoke development ➡ microservices – Automate everything!

• Off-the-shelf software ➡ utility systems – Select for automation and open standards

• Component integration – Dumb, open and “of the web”

OTS

Bespoke

Bespoke

OTS

CONCLUSION

THANK  YOU  Zhamak Dehghani

zdehghan@thoughtworks.com @zhamakd

Andy Marks amarks@thoughtworks.com @andee_marks