Devlog #1: Implementing Branch by Abstraction
An effective strategy for iteratively modernising a legacy system.
Hey everyone!
I've just published the next post in my devlog series, where I explore how to use Branch by Abstraction to introduce a new Bounded Context within our existing Monolith.
In this article, I share practical insights on:
- Encapsulating behaviour within service boundaries in a complex system 
- Implementing composite services for gradual transition 
- Real-world challenges and solutions in legacy modernisation 
- Refactoring existing code without introducing breaking changes 
If you're working with legacy systems or planning a major refactoring effort, you'll find concrete strategies you can apply to your own projects.
Check it out here:
https://acairns.co.uk/devlogs/profiles/1-implementing-branch-by-abstraction
As always, I'd love to hear your thoughts and experiences with these patterns. Have you used Branch by Abstraction or the Strangler Fig pattern in your work? What challenges did you face? Drop by the Discord server to join the conversation!
Enjoy!
Andrew
P.S. If you find this helpful, feel free to share it with your team or anyone dealing with legacy modernisation challenges.


