Symfony Hexagonal Architecture

18+

Years Experience

Complete

Domain Logic Coverage

Milliseconds

Domain Test Speed

Hexagonal Architecture for Symfony

Clear separation between domain logic and infrastructure concerns
Test domain logic in isolation without databases or external APIs
Swap technologies without rewriting business logic
Model business domain with DDD patterns (Aggregates, Value Objects, Events)
CQRS implementation for optimised read and write models
Event-driven architecture for scalable, decoupled systems
Hexagonal architecture creates distinct layers where domain logic remains framework-agnostic and infrastructure code handles technical concerns. This separation prevents technical debt accumulation by enforcing strict boundaries between business rules and implementation details. Your core business logic stays clean, testable, and focused on solving domain problems rather than wrestling with framework specifics or database concerns.

Our Approach

How We Implement Hexagonal Architecture

Domain Modelling Workshop

We start by understanding your business domain through collaborative workshops. Event storming, bounded context mapping, and ubiquitous language definition ensure we're building the right model that reflects your actual business processes.

Hexagonal Architecture & CQRS

We architect your application with clear hexagonal boundaries: Domain (core business logic), Application (use cases), and Infrastructure (adapters). Each layer has defined responsibilities with dependencies pointing inward. We implement CQRS patterns to separate read and write models, optimising commands for state modification and queries for efficient data retrieval.

Test-Driven Development

We write tests first, driving out clean interfaces and ensuring every piece of business logic is covered. Domain tests run in milliseconds without database dependencies, whilst integration tests verify adapter behaviour and infrastructure concerns.

Key Benefits

Why Choose Hexagonal Architecture

Faster Development Cycles

Faster feature delivery
Changes to business logic no longer require touching databases or external services. Teams move faster with less coupling.

Superior Test Coverage

100% domain coverage
Domain logic tests run in milliseconds without database setup. Achieve confidence through complete, fast test suites covering all business logic.

Reduced Technical Debt

Reduced refactoring
Clean architecture prevents the gradual degradation common in traditional Symfony applications. Maintain velocity over years.

Technology Independence

Zero domain rewrites
Business logic remains stable whilst infrastructure evolves. Migrate databases, upgrade Symfony versions, or switch message brokers without risk.

Related Symfony Services

Complementary Symfony expertise

Complementary Services

Architecture excellence across technologies

Ready to eliminate your technical debt?

Transform unmaintainable legacy code into a clean, modern codebase that your team can confidently build upon.