JS Fest 2019/Autumn. Андрей Андрийко. Гексагональна архітектура в Nodejs проекті

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The document discusses hexagonal architecture, covering its definition, advantages, and testing methods. It emphasizes the importance of maintainability and adaptability in software projects while outlining scenarios in which hexagonal architecture is beneficial or unnecessary. The presentation also includes practical examples and potential pitfalls such as over-engineering and complexity.

Education

About me
Backend Tech Lead at
Lecturer at Kottans
Andriy Andriyko

What we will talk about
1. What is good architecture?
2. What is hexagonal architecture?
3. Run it! Examples and demo
4. How to test hexagon?
5. Do you really need it?
6. Summary

JS Fest 2019/Autumn. Андрей Андрийко. Гексагональна архітектура в Nodejs проекті

What do we want from architecture?
● High Maintainability
● Low Technical Debt

Secondary adapters. Notifications
Port
Adapter

Project structure
/core
/primaryAdapters
/secondaryAdapters

Project structure. Core
/core
/component
/port
/sharedKernel

Not a silver bullet
When you need Hexagon?
● App have business logic
● App will evolve
● Team is big and project is long-term
● Need to change technologies

When you don’t need Hexagon?
● Small projects
● Speed more important than maintainability
● There is a better fit for your problem

Combine approaches
● Service-oriented architecture
● Microservices
● Serverless

Problems
● Transactions
● Validations
● DB queries optimisation

Conclusions
Pros Cons
Great testability Complexity
Maintainability Easy to over-engineer
Easy handle changes
Delay technical decisions

Contacts
andriy.andriyko@uptech.team
andriy-andriyko
Stormteller

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