Ecosystem

CQRS Resources

Project Templates

• Project template for quickly building DDD projects based on the Wow framework

Books

• "Domain-Driven Design: Tackling Complexity in the Heart of Software"
• "Implementing Domain-Driven Design"

Free E-books

• CQRS Journey

Open Source Frameworks

• Wow: Modern reactive CQRS architecture microservice development framework based on DDD & EventSourcing
• Axon Framework: A framework for building evolutionary, event-driven microservices based on Domain-Driven Design (DDD), Command Query Responsibility Segregation (CQRS), and Event Sourcing principles.

Awesome Lists

• awesome-ddd: A curated list of Domain-Driven Design (DDD), Command Query Responsibility Segregation (CQRS), Event Sourcing, and Event Storming resources.

Blogs

• Event Sourcing - Specifications @abdullin
• Testing Event Sourcing @event-driven
• Event Sourcing and CQRS @eventstore
• Event Sourcing @martinfowler
• Event Sourcing @microsoft
• Event Sourcing @microservices

Microservices Resources

• Wow: Modern reactive CQRS architecture microservice development framework based on DDD & EventSourcing
• wow-project-template: Project template for quickly building DDD projects based on the Wow framework
• FluentAssert: FluentAssert is a Kotlin library that provides fluent assertions for JDK types, making your tests more readable and expressive. The library uses Kotlin extension functions to wrap AssertJ assertions for better syntax
• Fetcher: Fetcher is not just an HTTP client -- it's a complete ecosystem designed for modern web development with native LLM streaming API support. Built on the native Fetch API, Fetcher provides an Axios-like experience while maintaining minimal size
• CosId: Universal, flexible, high-performance distributed ID generator
• CoSky: High-performance, low-cost microservice governance platform
• CoSec: Multi-tenant reactive security framework based on RBAC and policies
• CoCache: Distributed consistent secondary cache framework
• Simba: Easy-to-use, flexible distributed lock service
• CoApi: Simplifies HTTP client definitions in Spring 6, providing zero-boilerplate auto-configuration for more convenient and efficient interface calls
• Nacos: Alibaba's open source platform for building cloud-native applications with dynamic service discovery, configuration management, and service management

Reactive Resources

• Reactive Manifesto
• R2DBC
• ReactiveX
• Reactive Streams
• Project Reactor
• RxJava

Wow Ecosystem

The following projects are part of the Wow ecosystem and are designed to work together:

• CosId - Universal, flexible, high-performance distributed ID generator
• CoSec - Multi-tenant reactive security framework based on RBAC and policies
• CoCache - Distributed consistent secondary cache framework
• Simba - Easy-to-use, flexible distributed lock service
• CoSky - High-performance, low-cost microservice governance platform
• FluentAssert - Kotlin fluent assertion library for readable and expressive tests