Until recently, layered architecture was the most common way of organizing large applications or modules. We’ve learned from practice that it has limitations:
- business rules tend to escape or be duplicated in UI and/or data layer
- switching from a database to another is very difficult
- adding another UI to the application (eg. mobile or smart client) requires heavy changes
- changing a library used by the application with another is often complex and risky
A new architecture style has appeared in the recent years that tackles this problem: Hexagonal Architecture, or Ports & Adapters. Its intent is to allow more flexibility by cleanly separating business rules from everything else.
Johann Martinsson and Rémy Sanlaville have described the basics of Hexagonal Architecture and then shown an example of such an architecture.
Enjoy their presentation @ I T.A.K.E. Unconference 2014 edition. Curious about 2015 edition?
Check out more about I T.A.K.E. Unconference 2015 or see directly the Schedule.
Brutal Building Constraints
Enjoy the following series of interviews with the speakers, top-notch software crafters from across Europe, joining I T.A.K.E Unconference, Bucharest, 11-12 May. Discover the lessons learned and what drives them to challenge the known path in their field.
Peter Kofler is a software developer since 17 years and still enthusiastic about writing code. At I T.A.K.E Unconference, he will share more about Brutal Coding Constraints.
#1. Please share with us 5 things you did that helped you grow & become the professional you are today
1. The biggest thing I did that changed me was a Journeyman Tour. For three months I visited different companies in Vienna and paired with their developers. See here for more information. (Three Month Journeyman Tour)
2. This included a lot of pair programming with strangers. I like pair programming and make use of it to learn from others. (Pair Programming)
3. I did (and still do) a lot of Code Katas to practice and experiment with code, patterns, and design. (Code Katas)
4. Try to continuously improve.
5. Read technical books.
#2. What challenges will the participants find solutions to during your session at I T.A.K.E Unconference 2017?
Yes, my session, the Brutal Coding Constraints, is a real challenge. It challenges our perception of Object Orientation and aims to deepen our understanding.
#3. Recommend for the participants 3 sources you find inspiration from and would help them better understand you
* Michael Feathers – The Deep Synergy Between Testability and Good Design
* Bryan Liles – TATFT – Test All the F…in Time
* J.B. Rainsberger – The Worlds Best Introduction to TDD
Want to join Peter and ~300 software crafters from around Europe?
Register now for I T.A.K.E Unconference 2017!
Behaviour Driven Development with Thomas Sundberg
Thomas Sundberg is an independent consultant based in Stockholm, Sweden. He has a Masters degree in Computer Science from the Royal Institute of Technology, KTH, in Stockholm. Thomas has been working as a developer for more than 20 years and has developed an obsession for technical excellence. This translates to Software Craftsmanship, Clean Code and Test Automation.
Cucumber JVM is a tool that allows development teams to describe how software should behave in plain text. The text is written in a business-readable domain-specific language and serves as documentation, automated test and development-aid – all rolled into one format. Cucumber JVM enables the implementation of Behaviour Driven Development in an organization that uses JVM for development.
Enjoy his presentation @ I T.A.K.E. Unconference 2014 edition.
Check out more about I T.A.K.E. Unconference 2015 or see directly the Schedule.
Docker & Zero Downtime Deployment rules
#1. Share with us 5 things you did that helped you grow & become the professional you are today
- Read and try stuff
- Be part of the software community
- Ask questions
- Coding outside the work (side projects, open source contributions, etc.)
- Learn by teaching (speaking at conferences, writing blogs posts, etc.)
#2. What challenges will the participants find solutions to during your session at I T.A.K.E Unconference 2016?
Both of my talks are overcoming the challenges of modern software products. Zero-downtime deployment session will empathize on the possibility of always-up systems and making continuous deployment more adoptable. There are a few things to watch out on this space and I am hoping to highlight on that by giving examples and demos on my real world experiences.
The docker session will get you a higher level on how a tool can make a difference on developing and releasing products, in this case microservices.
#3. What else would you like to share with participants
I like to be part of the software community. So, I produce a lot. You can follow my activity on my blog and GitHub account.
I love traveling and discovering new places. I am a huge Formula 1 fan.
Want to join Tugberk and many more software crafters from around Europe?