LEONARD GARVEY // LOUIS SIMONEAU SMASHING ......CONSUMER-DRIVEN CONTRACTS PACT -...
Transcript of LEONARD GARVEY // LOUIS SIMONEAU SMASHING ......CONSUMER-DRIVEN CONTRACTS PACT -...
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SMASHING THE MONOLITHLEONARD GARVEY // LOUIS SIMONEAU
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Pictures of Us Here
@louis_simoneau @lgarvey
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0. FOUNDATIONS
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MIKE ROWE SERVICES
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0. FOUNDATIONS
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ORGANISATIONS WHICH DESIGN SYSTEMS ... ARE CONSTRAINED TO PRODUCE DESIGNS WHICH ARE COPIES OF THE COMMUNICATION STRUCTURES OF THESE ORGANISATIONS
Melvin Conway - 1968
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1. WHY NOW?
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Photo: Kevin Engflickr.com/photos/10183029@N00
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THE STRANGE AND BEAUTIFUL TRUTH ABOUT THE ADJACENT POSSIBLE IS THAT ITS BOUNDARIES GROW AS YOU EXPLORE THEM.
Steven Johnson
WHERE GOOD IDEAS COME FROM
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‣ Infrastructure as a Service
‣ DevOps
‣ Continuous Delivery
‣ Product Teams
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ONCE THESE TECHNOLOGIES AND WAYS OF WORKING ARE IN PLACE, MICROSERVICES ARE THE NATURALLY EMERGENT ARCHITECTURAL FORM
Photo: Donald Macauly flickr.com/photos/27770620@N02
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2. DATA NOT FEATURES
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THE BUSINESS SYSTEMTHE WEBSITE
UPLOAD IMAGE
SEARCHADMIN
CRM
INVOICINGACCOUNTING
REPORTING
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SEARCH
IMAGES
AGENT INTERFACE
CRM INVOICING
ACCOUNTING
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SMASHING THE MONOLITH
▸As a user I want to upload a house for sale.
▸As a user I want to know that my listing is valid.
▸As a user I want to see my listing on the website as quickly as possible.
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RECEIVE LISTING
PUBLISH LISTING
PROCESS LISTING
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RECEIVE LISTING
PUBLISH LISTING
PROCESS LISTING
MONOLITHIC LISTINGS SYSTEM
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RECEIVE LISTING
PUBLISH LISTING
PROCESS LISTING
?
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RECEIVE LISTING
PUBLISH LISTING
PROCESS LISTING
LISTINGS PROVIDER
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RECEIVE LISTING
PUBLISH LISTING
PROCESS LISTING
LISTINGS PROVIDER
Listings Bounded Context
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MICROSERVICES AS BOUNDARY ALIGNMENT
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WEB APPLICATION
PROPERTY
IMAGE CUSTOMER
LISTING
COMMERCE SYSTEM
ORDER INVOICE
PAYMENTCUSTOMER
FEATURE TEAM 1
FINANCE TEAM
FEATURE TEAM 2
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‣ No source of truth
‣ Conflicting work
‣ Unclear (or no) custodianship
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EntitySystemTeam
EntitySystemTeam
Entity
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EntitySystemTeam
EntitySystem
Team
EntitySystem
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DOMAIN ENTITIES WHICH COEXIST IN MEMORY SPACE WILL ACQUIRE COUPLING MORE RAPIDLY THAN THOSE WHICH COEXIST IN NETWORK SPACE.
Photo: Matti Mattila flickr.com/photos/mattimattila
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3. HOW DO I EVEN?
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INDIVIDUALS AND INTERACTIONSOVER PROCESSES AND TOOLS
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ALIGNED BOUNDARIES REQUIRE ALIGNED COMMUNICATION
Entity
System
Team Team
System
Entity
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CONSUMER-DRIVEN CONTRACTS
PACT - GITHUB.COM/REALESTATE-COM-AU/PACT
SEARCH PROPERTY
PACT
http request
http response
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CONSUMER-DRIVEN CONTRACTS
PACT - GITHUB.COM/REALESTATE-COM-AU/PACT
SEARCH PROPERTY
PACT
http request
http response
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SYSTEMS OF RECORD
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SYSTEMS OF RECORD
‣ Immutability
‣ Event Sourcing
‣ Idempotency
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POLYGLOT DEVELOPMENT, MONOGLOT DEPLOYMENT
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ORGANISATIONS WHICH DESIGN SYSTEMS ... ARE CONSTRAINED TO PRODUCE DESIGNS WHICH ARE COPIES OF THE COMMUNICATION STRUCTURES OF THESE ORGANISATIONS
ORGANISATIONS WHICH DESIGN SYSTEMS ... ARE CONSTRAINED TO PRODUCE DESIGNS WHICH ARE COPIES OF THE COMMUNICATION STRUCTURES OF THESE ORGANISATIONS
Melvin Conway - 1968
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QUESTIONS?
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WE’RE HIRING