Taming the Monolith

These are the slides of my talk on June 22nd 2015 at the GOTO Night in Cologne

https://secure.trifork.com/berlin-2015/freeevent/index.jsp?eventOID=7123

Abstract:

Domain-Driven Design changed the way we reason about large software systems. Modern practices, tools and technologies like continuous delivery, NoSQL, and cloud-based virtualization allow the creation of fine-grained systems to solve the specific problems at hand. Having DDD in mind and technical expertise at our hands, with microservice architectures we can build complex systems that reflect our businesses' complex realities and are easy to change at the same time. This talk will show what DDD and microservice architectures have in common and how you can use both to create software systems that fit your domain.

Transcript

1. TAMING THE MONOLITH Are microservices just an implementation detail? #GOTOnight Cologne | June 22nd, 2015 | Dennis Traub | @DTraub
2. EVERYBODY TALKS ABOUT MICROSERVICES 2
4. https://i2.wp.com/www.aydinstone.com/vic20.jpg
5. http://www.weihenstephan.org/~michaste/pagetable/64er/64er_1984-04.jpg | http://www.c64-wiki.de/images/thumb/4/43/listing_shape.jpg/300px-listing_shape.jpg
6. - A sphere of knowledge, influence, or activity - - What an organisation does, and the world it does it in - DOMAIN
7. - A system of abstractions describing selected aspects of a Domain - - Used to solve problems related to that Domain - MODEL
8. SIT DOWN WITH THE EXPERTS & LISTEN
9. http://wikimediafoundation.org/wiki/File:Commodore-VIC-20-FL.jpg
10. http://wikimediafoundation.org/wiki/File:Commodore-VIC-20-FL.jpg http://backgrounds.1nova.com/wp-content/uploads/sites/27/2015/02/One-Ring-to-Rule-them-All.jpg ONE MODEL TO RULE THEM ALL
11. - A language structured around the Domain Model - - Used by all team members and throughout the code - UBIQUITOUS LANGUAGE
12. Customer
13. Customer Marketing Target Group
14. Customer Marketing Target Group Website Visitor
15. Customer Marketing Target Group Website Visitor Shopping Cart Buyer
16. Customer Recipient Shipping Marketing Target Group Website Visitor Shopping Cart Buyer
17. Customer Recipient Shipping Marketing Target Group Hotline Caller Website Visitor Shopping Cart Buyer
18. Customer Recipient Shipping Marketing Target Group Hotline Caller Website Visitor Shopping Cart Buyer Purchasing Customer
19. - An explicit boundary within which a Domain Model exists - - Inside, all terms have a specific meaning - - They are part of the Ubiquitous Language - BOUNDED CONTEXT
20. Customer Recipient Shipping Marketing Target Group Hotline Caller Website Visitor Shopping Cart Buyer Purchasing Customer
21. Customer Recipient Shipping Marketing Target Group Hotline Caller Website Visitor Shopping Cart Buyer Purchasing Customer
22. KEY ATTRIBUTES OF A BOUNDED CONTEXT High Cohesion Loose Coupling Represents Business Capability Context-specific Model
23. KEY ATTRIBUTES OF A MICROSERVICE High Cohesion Loose Coupling Represents Business Capability Context-specific Model
24. We don’t model reality We model useful abstractions
25. We don’t build a model that works for everyone
26. THANK YOU! Dennis Traub | @DTraub | #GOTOnight