EventFlow API v2.0.0 - CQRS & Clean Architecture Implementation

EventFlow API v2.0.0 - Release Notes

Overview

Major architectural overhaul implementing Clean Architecture, CQRS, and Domain-Driven Design patterns for the EventFlow event management platform.

Key Architectural Changes

CQRS with MediatR

• Full separation of Commands and Queries
• Dedicated handlers for event management operations (Create, Update, Delete, Get)
• Cross-cutting concerns handled via pipeline behaviors (validation, caching)

Result Pattern Implementation

• Type-safe error handling with Result<T> and Result types
• Support for multiple error categories (NotFound, Validation, Conflict, Unauthorized, Forbidden)
• Implicit operators for seamless value-to-result conversions

Repository Pattern & Unit of Work

• Repository abstractions for domain entities
• Clear separation between read and write operations
• Entity Framework Core integration with proper Unit of Work boundaries

Value Objects & Domain Model

• Immutable value objects (PersonName, Email) encapsulating business rules
• Proper EF Core owned entity configuration
• Business rule validation at domain level

Clean Architecture Layers

• Domain Layer: Entities, Value Objects, Domain Events, Business Rules
• Application Layer: CQRS handlers, DTOs, abstractions, pipeline behaviors
• Infrastructure Layer: Data persistence, external services (JWT, caching)
• Presentation Layer: REST controllers, middleware, health checks

Quality & Observability

• Testing: Comprehensive unit test coverage for handlers and domain logic
• Monitoring: Health checks integration with UI dashboard
• Logging: Structured logging with centralized log aggregation
• Tracing: Distributed tracing support for request tracking

DevOps & Deployment

• Containerization: Multi-stage Docker build
• Orchestration: Docker Compose configuration with dependencies (SQL Server, Redis)
• Published Image: docker.io/alysonsz/eventflow-api:v2.0.0

API Features

• RESTful endpoints with standardized responses
• JWT authentication with claims-based authorization
• Consistent pagination across list endpoints
• Input validation and error handling

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v1.0.0 - Observability & Performance Update

🚀 v1.0.0 - Observability & Performance Update

This first major release transforms the EventFlow API into a high-performance, distributed system ready for enterprise scenarios.

🐳 Docker Image (Ready to Run)

You don't need to compile the code. Pull the production image directly:

docker pull alysonsz/eventflow-api:v1.0.0

🌟 Key Features

• Distributed Caching: Implemented Redis with Cache-Aside pattern for high-speed reads.
• Observability: Full OpenTelemetry integration with Jaeger for distributed tracing.
• Logging: Structured logging via Serilog and Seq.
• Resilience: Database connection resiliency with Polly strategies.
• Containerization: Complete Docker Compose environment setup.

🛠️ Infrastructure

• Added docker-compose.yml orchestrating API, SQL Server, Redis, Jaeger, and Seq.
• Refactored startup logic using AppConfiguration extension methods.

🧪 Quality

• Comprehensive Unit Testing with Moq and xUnit.